Vulnerability-Lookup

CVE-2025-39967 (GCVE-0-2025-39967)

Vulnerability from cvelistv5 – Published: 2025-10-15 07:55 – Updated: 2026-08-05 12:06

Title

fbcon: fix integer overflow in fbcon_do_set_font

Summary

In the Linux kernel, the following vulnerability has been resolved: fbcon: fix integer overflow in fbcon_do_set_font Fix integer overflow vulnerabilities in fbcon_do_set_font() where font size calculations could overflow when handling user-controlled font parameters. The vulnerabilities occur when: 1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount multiplication with user-controlled values that can overflow. 2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow 3. This results in smaller allocations than expected, leading to buffer overflows during font data copying. Add explicit overflow checking using check_mul_overflow() and check_add_overflow() kernel helpers to safety validate all size calculations before allocation.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-10 20:42 UTC

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/994bdc2d23c79087f…
https://git.kernel.org/stable/c/9c8ec14075c5317ed…
https://git.kernel.org/stable/c/b8a6e85328aeb9881…
https://git.kernel.org/stable/c/a6eb9f423b3db000a…
https://git.kernel.org/stable/c/adac90bb1aaf45ca6…
https://git.kernel.org/stable/c/4a4bac869560f943e…
https://git.kernel.org/stable/c/c0c01f9aa08c8e10e…
https://git.kernel.org/stable/c/1a194e6c8e1ee745e…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 96e41fc29e8af5c5085fb8a79cab8d0d00bab86c , < 994bdc2d23c79087fbf7dcd9544454e8ebcef877 (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < 9c8ec14075c5317edd6b242f1be8167aa1e4e333 (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < b8a6e85328aeb9881531dbe89bcd2637a06c3c95 (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < a6eb9f423b3db000aaedf83367b8539f6b72dcfc (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < adac90bb1aaf45ca66f9db8ac100be16750ace78 (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < 4a4bac869560f943edbe3c2b032062f6673b13d3 (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < c0c01f9aa08c8e10e10e8c9ebb5be01a4eff6eb7 (git) Affected: 39b3cffb8cf3111738ea993e2757ab382253d86a , < 1a194e6c8e1ee745e914b0b7f50fa86c89ed13fe (git) Affected: ae021a904ac82d9fc81c25329d3c465c5a7d5686 (git) Affected: 451bffa366f2cc0e5314807cb847f31c0226efed (git) Affected: 2c455e9c5865861f5ce09c5f596909495ed7657c (git) Affected: 72f099805dbc907fbe8fa19bccdc31d3e2ee6e9e (git) Affected: 34cf1aff169dc6dedad8d79da7bf1b4de2773dbc (git) Affected: 5.4.62 , < 5.4.300 (semver) Affected: 4.4.235 , < 4.5 (semver) Affected: 4.9.235 , < 4.10 (semver) Affected: 4.14.196 , < 4.15 (semver) Affected: 4.19.143 , < 4.20 (semver) Affected: 5.8.6 , < 5.9 (semver)	guessed
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.4.300 , ≤ 5.4.* (semver) Unaffected: 5.10.245 , ≤ 5.10.* (semver) Unaffected: 5.15.194 , ≤ 5.15.* (semver) Unaffected: 6.1.155 , ≤ 6.1.* (semver) Unaffected: 6.6.109 , ≤ 6.6.* (semver) Unaffected: 6.12.50 , ≤ 6.12.* (semver) Unaffected: 6.16.10 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

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              "content": {
                "id": "CVE-2025-39967",
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                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T20:42:14.769458Z",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: fix integer overflow in fbcon_do_set_font\n\nFix integer overflow vulnerabilities in fbcon_do_set_font() where font\nsize calculations could overflow when handling user-controlled font\nparameters.\n\nThe vulnerabilities occur when:\n1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount\n   multiplication with user-controlled values that can overflow.\n2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow\n3. This results in smaller allocations than expected, leading to buffer\n   overflows during font data copying.\n\nAdd explicit overflow checking using check_mul_overflow() and\ncheck_add_overflow() kernel helpers to safety validate all size\ncalculations before allocation."
        }
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            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The only route to `fbcon_set_font()` is the `KDFONTOP` ioctl on a virtual console device (`/dev/ttyN`, `/dev/tty`), reached through `vt_ioctl()`/`con_font_op()`; there is no network, packet, or remote-peer input into this code.\nAC:L - The attacker supplies every operand of the faulty arithmetic \u2014 `width`, `height` and `charcount` come straight from the user-provided `struct console_font_op` \u2014 and the allocation-then-copy sequence is a single deterministic ioctl with no race to win, no memory grooming and no state the attacker cannot set up.\nPR:L - `vt_ioctl()` grants `perm` to any process whose controlling terminal is the VT, so an ordinary unprivileged user logged in on a virtual console (physical console, embedded/automotive/kiosk fbcon system, or a serial/VT login) can issue `KD_FONT_OP_SET` without any capability; only the alternative `CAP_SYS_TTY_CONFIG` route needs real root.\nUI:N - The attacker performs the ioctl on its own console session; no administrator or second user has to open a file, mount anything, or take any action.\nS:U - The undersized allocation and the overflowing copy both occur in kernel heap memory within the same security authority the attacker is already attacking; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A short kmalloc chunk followed by a length-mismatched copy loop corrupts adjacent slab objects, and the font is subsequently readable back via `KD_FONT_OP_GET`/`con_font_get()`, so out-of-bounds heap contents \u2014 kernel pointers, credentials, other slab users\u0027 data \u2014 can be disclosed to userspace.\nI:H - The overflow is an out-of-bounds heap write whose length and byte content are entirely attacker-chosen (the glyph bitmap), which is the classic primitive for overwriting neighbouring slab objects such as function pointers or `struct cred`, giving arbitrary modification and potential control-flow hijack.\nA:H - Writing past the end of the font allocation corrupts the slab and reliably produces a kernel oops, SLUB freelist BUG, or panic; the ioctl can be repeated at will, so it is a repeatable full-system denial of service."
            }
          ]
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
          "url": "https://git.kernel.org/stable/c/1a194e6c8e1ee745e914b0b7f50fa86c89ed13fe"
        }
      ],
      "title": "fbcon: fix integer overflow in fbcon_do_set_font",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39967",
    "datePublished": "2025-10-15T07:55:51.554Z",
    "dateReserved": "2025-04-16T07:20:57.149Z",
    "dateUpdated": "2026-08-05T12:06:36.336Z",
    "state": "PUBLISHED"
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      "date": "2026-10-06",
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "fbcon: fix integer overflow in fbcon_do_set_font",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-39967.json",
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                  "value": "AV:L - The only route to `fbcon_set_font()` is the `KDFONTOP` ioctl on a virtual console device (`/dev/ttyN`, `/dev/tty`), reached through `vt_ioctl()`/`con_font_op()`; there is no network, packet, or remote-peer input into this code.\nAC:L - The attacker supplies every operand of the faulty arithmetic \u2014 `width`, `height` and `charcount` come straight from the user-provided `struct console_font_op` \u2014 and the allocation-then-copy sequence is a single deterministic ioctl with no race to win, no memory grooming and no state the attacker cannot set up.\nPR:L - `vt_ioctl()` grants `perm` to any process whose controlling terminal is the VT, so an ordinary unprivileged user logged in on a virtual console (physical console, embedded/automotive/kiosk fbcon system, or a serial/VT login) can issue `KD_FONT_OP_SET` without any capability; only the alternative `CAP_SYS_TTY_CONFIG` route needs real root.\nUI:N - The attacker performs the ioctl on its own console session; no administrator or second user has to open a file, mount anything, or take any action.\nS:U - The undersized allocation and the overflowing copy both occur in kernel heap memory within the same security authority the attacker is already attacking; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A short kmalloc chunk followed by a length-mismatched copy loop corrupts adjacent slab objects, and the font is subsequently readable back via `KD_FONT_OP_GET`/`con_font_get()`, so out-of-bounds heap contents \u2014 kernel pointers, credentials, other slab users\u0027 data \u2014 can be disclosed to userspace.\nI:H - The overflow is an out-of-bounds heap write whose length and byte content are entirely attacker-chosen (the glyph bitmap), which is the classic primitive for overwriting neighbouring slab objects such as function pointers or `struct cred`, giving arbitrary modification and potential control-flow hijack.\nA:H - Writing past the end of the font allocation corrupts the slab and reliably produces a kernel oops, SLUB freelist BUG, or panic; the ioctl can be repeated at will, so it is a repeatable full-system denial of service."
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            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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              "url": "https://git.kernel.org/stable/c/1a194e6c8e1ee745e914b0b7f50fa86c89ed13fe"
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          "title": "fbcon: fix integer overflow in fbcon_do_set_font",
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        "cveId": "CVE-2025-39967",
        "datePublished": "2025-10-15T07:55:51.554Z",
        "dateReserved": "2025-04-16T07:20:57.149Z",
        "dateUpdated": "2026-08-05T12:06:36.336Z",
        "state": "PUBLISHED"
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      "dataVersion": "5.2"
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}

OESA-2025-2556 (CVE-2024-53168)

Vulnerability from osv_openeuler – Published: 2025-10-31 11:09 – Updated: 2026-08-06 11:09 – Source website

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:sunrpc: fix one UAF issue caused by sunrpc kernel tcp socketBUG: KASAN: slab-use-after-free in tcp_write_timer_handler+0x156/0x3e0Read of size 1 at addr ffff888111f322cd by task swapper/0/0CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc4-dirty #7Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1Call Trace: <IRQ> dump_stack_lvl+0x68/0xa0 print_address_description.constprop.0+0x2c/0x3d0 print_report+0xb4/0x270 kasan_report+0xbd/0xf0 tcp_write_timer_handler+0x156/0x3e0 tcp_write_timer+0x66/0x170 call_timer_fn+0xfb/0x1d0 __run_timers+0x3f8/0x480 run_timer_softirq+0x9b/0x100 handle_softirqs+0x153/0x390 __irq_exit_rcu+0x103/0x120 irq_exit_rcu+0xe/0x20 sysvec_apic_timer_interrupt+0x76/0x90 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20RIP: 0010:default_idle+0xf/0x20Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 f8 25 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90RSP: 0018:ffffffffa2007e28 EFLAGS: 00000242RAX: 00000000000f3b31 RBX: 1ffffffff4400fc7 RCX: ffffffffa09c3196RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9f00590fRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed102360835dR10: ffff88811b041aeb R11: 0000000000000001 R12: 0000000000000000R13: ffffffffa202d7c0 R14: 0000000000000000 R15: 00000000000147d0 default_idle_call+0x6b/0xa0 cpuidle_idle_call+0x1af/0x1f0 do_idle+0xbc/0x130 cpu_startup_entry+0x33/0x40 rest_init+0x11f/0x210 start_kernel+0x39a/0x420 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0x97/0xa0 common_startup_64+0x13e/0x141 </TASK>Allocated by task 595: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x87/0x90 kmem_cache_alloc_noprof+0x12b/0x3f0 copy_net_ns+0x94/0x380 create_new_namespaces+0x24c/0x500 unshare_nsproxy_namespaces+0x75/0xf0 ksys_unshare+0x24e/0x4f0 __x64_sys_unshare+0x1f/0x30 do_syscall_64+0x70/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7eFreed by task 100: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x54/0x70 kmem_cache_free+0x156/0x5d0 cleanup_net+0x5d3/0x670 process_one_work+0x776/0xa90 worker_thread+0x2e2/0x560 kthread+0x1a8/0x1f0 ret_from_fork+0x34/0x60 ret_from_fork_asm+0x1a/0x30Reproduction script:mkdir -p /mnt/nfssharemkdir -p /mnt/nfs/netns_1mkfs.ext4 /dev/sdbmount /dev/sdb /mnt/nfssharesystemctl restart nfs-serverchmod 777 /mnt/nfsshareexportfs -i -o rw,no_root_squash *:/mnt/nfsshareip netns add netns_1ip link add name veth_1_peer type veth peer veth_1ifconfig veth_1_peer 11.11.0.254 upip link set veth_1 netns netns_1ip netns exec netns_1 ifconfig veth_1 11.11.0.1ip netns exec netns_1 /root/iptables -A OUTPUT -d 11.11.0.254 -p tcp --tcp-flags FIN FIN -j DROP(note: In my environment, a DESTROY_CLIENTID operation is always sent immediately, breaking the nfs tcp connection.)ip netns exec netns_1 timeout -s 9 300 mount -t nfs -o proto=tcp,vers=4.1 11.11.0.254:/mnt/nfsshare /mnt/nfs/netns_1ip netns del netns_1The reason here is that the tcp socket in netns_1 (nfs side) has beenshutdown and closed (done in xs_destroy), but the FIN message (with ack)is discarded, and the nfsd side keeps sending retransmission messages.As a result, when the tcp sock in netns_1 processes the received message,it sends the message (FIN message) in the sending queue, and the tcp timeris re-established. When the network namespace is deleted, the net structureaccessed by tcp s timer handler function causes problems.To fix this problem, let s hold netns refcnt for the tcp kernel socket asdone in other modules. This is an ugly hack which can easily be backportedto earlier kernels. A proper fix which cleans up the interfaces willfollow, but may not be so easy to backport.(CVE-2024-53168)

In the Linux kernel, the following vulnerability has been resolved:

x86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range()

Xen doesn't offer MSR_FAM10H_MMIO_CONF_BASE to all guests. This results in the following warning:

unchecked MSR access error: RDMSR from 0xc0010058 at rIP: 0xffffffff8101d19f (xen_do_read_msr+0x7f/0xa0) Call Trace: xen_read_msr+0x1e/0x30 amd_get_mmconfig_range+0x2b/0x80 quirk_amd_mmconfig_area+0x28/0x100 pnp_fixup_device+0x39/0x50 __pnp_add_device+0xf/0x150 pnp_add_device+0x3d/0x100 pnpacpi_add_device_handler+0x1f9/0x280 acpi_ns_get_device_callback+0x104/0x1c0 acpi_ns_walk_namespace+0x1d0/0x260 acpi_get_devices+0x8a/0xb0 pnpacpi_init+0x50/0x80 do_one_initcall+0x46/0x2e0 kernel_init_freeable+0x1da/0x2f0 kernel_init+0x16/0x1b0 ret_from_fork+0x30/0x50 ret_from_fork_asm+0x1b/0x30

based on quirks for a "PNP0c01" device. Treating MMCFG as disabled is the right course of action, so no change is needed there.

This was most likely exposed by fixing the Xen MSR accessors to not be silently-safe.(CVE-2025-21913)

In the Linux kernel, the following vulnerability has been resolved:

pds_core: Prevent possible adminq overflow/stuck condition

The pds_core's adminq is protected by the adminq_lock, which prevents more than 1 command to be posted onto it at any one time. This makes it so the client drivers cannot simultaneously post adminq commands. However, the completions happen in a different context, which means multiple adminq commands can be posted sequentially and all waiting on completion.

On the FW side, the backing adminq request queue is only 16 entries long and the retry mechanism and/or overflow/stuck prevention is lacking. This can cause the adminq to get stuck, so commands are no longer processed and completions are no longer sent by the FW.

As an initial fix, prevent more than 16 outstanding adminq commands so there's no way to cause the adminq from getting stuck. This works because the backing adminq request queue will never have more than 16 pending adminq commands, so it will never overflow. This is done by reducing the adminq depth to 16.(CVE-2025-37987)

In the Linux kernel, the following vulnerability has been resolved:

module: ensure that kobject_put() is safe for module type kobjects

In 'lookup_or_create_module_kobject()', an internal kobject is created using 'module_ktype'. So call to 'kobject_put()' on error handling path causes an attempt to use an uninitialized completion pointer in 'module_kobject_release()'. In this scenario, we just want to release kobject without an extra synchronization required for a regular module unloading process, so adding an extra check whether 'complete()' is actually required makes 'kobject_put()' safe.(CVE-2025-37995)

In the Linux kernel, the following vulnerability has been resolved:

regulator: core: fix NULL dereference on unbind due to stale coupling data

Failing to reset coupling_desc.n_coupled after freeing coupled_rdevs can lead to NULL pointer dereference when regulators are accessed post-unbind.

This can happen during runtime PM or other regulator operations that rely on coupling metadata.

For example, on ridesx4, unbinding the 'reg-dummy' platform device triggers a panic in regulator_lock_recursive() due to stale coupling state.

Ensure n_coupled is set to 0 to prevent access to invalid pointers.(CVE-2025-38668)

In the Linux kernel, the following vulnerability has been resolved:

drm/nouveau/nvif: Fix potential memory leak in nvif_vmm_ctor().

When the nvif_vmm_type is invalid, we will return error directly without freeing the args in nvif_vmm_ctor(), which leading a memory leak. Fix it by setting the ret -EINVAL and goto done.(CVE-2025-39679)

In the Linux kernel, the following vulnerability has been resolved:

serial: 8250: fix panic due to PSLVERR

When the PSLVERR_RESP_EN parameter is set to 1, the device generates an error response if an attempt is made to read an empty RBR (Receive Buffer Register) while the FIFO is enabled.

In serial8250_do_startup(), calling serial_port_out(port, UART_LCR, UART_LCR_WLEN8) triggers dw8250_check_lcr(), which invokes dw8250_force_idle() and serial8250_clear_and_reinit_fifos(). The latter function enables the FIFO via serial_out(p, UART_FCR, p->fcr). Execution proceeds to the serial_port_in(port, UART_RX). This satisfies the PSLVERR trigger condition.

When another CPU (e.g., using printk()) is accessing the UART (UART is busy), the current CPU fails the check (value & ~UART_LCR_SPAR) == (lcr & ~UART_LCR_SPAR) in dw8250_check_lcr(), causing it to enter dw8250_force_idle().

Put serial_port_out(port, UART_LCR, UART_LCR_WLEN8) under the port->lock to fix this issue.

Panic backtrace: [ 0.442336] Oops - unknown exception [#1] [ 0.442343] epc : dw8250_serial_in32+0x1e/0x4a [ 0.442351] ra : serial8250_do_startup+0x2c8/0x88e ... [ 0.442416] console_on_rootfs+0x26/0x70(CVE-2025-39724)

In the Linux kernel, the following vulnerability has been resolved:

HID: multitouch: fix slab out-of-bounds access in mt_report_fixup()

A malicious HID device can trigger a slab out-of-bounds during mt_report_fixup() by passing in report descriptor smaller than 607 bytes. mt_report_fixup() attempts to patch byte offset 607 of the descriptor with 0x25 by first checking if byte offset 607 is 0x15 however it lacks bounds checks to verify if the descriptor is big enough before conducting this check. Fix this bug by ensuring the descriptor size is at least 608 bytes before accessing it.

Below is the KASAN splat after the out of bounds access happens:

[ 13.671954] ================================================================== [ 13.672667] BUG: KASAN: slab-out-of-bounds in mt_report_fixup+0x103/0x110 [ 13.673297] Read of size 1 at addr ffff888103df39df by task kworker/0:1/10 [ 13.673297] [ 13.673297] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.15.0-00005-gec5d573d83f4-dirty #3 [ 13.673297] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/04 [ 13.673297] Call Trace: [ 13.673297] <TASK> [ 13.673297] dump_stack_lvl+0x5f/0x80 [ 13.673297] print_report+0xd1/0x660 [ 13.673297] kasan_report+0xe5/0x120 [ 13.673297] __asan_report_load1_noabort+0x18/0x20 [ 13.673297] mt_report_fixup+0x103/0x110 [ 13.673297] hid_open_report+0x1ef/0x810 [ 13.673297] mt_probe+0x422/0x960 [ 13.673297] hid_device_probe+0x2e2/0x6f0 [ 13.673297] really_probe+0x1c6/0x6b0 [ 13.673297] __driver_probe_device+0x24f/0x310 [ 13.673297] driver_probe_device+0x4e/0x220 [ 13.673297] __device_attach_driver+0x169/0x320 [ 13.673297] bus_for_each_drv+0x11d/0x1b0 [ 13.673297] __device_attach+0x1b8/0x3e0 [ 13.673297] device_initial_probe+0x12/0x20 [ 13.673297] bus_probe_device+0x13d/0x180 [ 13.673297] device_add+0xe3a/0x1670 [ 13.673297] hid_add_device+0x31d/0xa40 ...

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.(CVE-2025-39898)

In the Linux kernel, the following vulnerability has been resolved:

fbcon: fix integer overflow in fbcon_do_set_font

Fix integer overflow vulnerabilities in fbcon_do_set_font() where font size calculations could overflow when handling user-controlled font parameters.

The vulnerabilities occur when: 1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount multiplication with user-controlled values that can overflow. 2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow 3. This results in smaller allocations than expected, leading to buffer overflows during font data copying.

Add explicit overflow checking using check_mul_overflow() and check_add_overflow() kernel helpers to safety validate all size calculations before allocation.(CVE-2025-39967)

In the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_syncThis fixes the following UFA in hci_acl_create_conn_sync where aconnection still pending is command submission (conn->state == BT_OPEN)maybe freed, also since this also can happen with the likes ofhci_le_create_conn_sync fix it as well:BUG: KASAN: slab-use-after-free in hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861Write of size 2 at addr ffff88805ffcc038 by task kworker/u11:2/9541CPU: 1 UID: 0 PID: 9541 Comm: kworker/u11:2 Not tainted 6.16.0-rc7 #3 PREEMPT(full)Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014Workqueue: hci3 hci_cmd_sync_workCall Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x230 mm/kasan/report.c:480 kasan_report+0x118/0x150 mm/kasan/report.c:593 hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861 hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16-rc7/arch/x86/entry/entry_64.S:245 </TASK>Allocated by task 123736: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] __hci_conn_add+0x233/0x1b30 net/bluetooth/hci_conn.c:939 hci_conn_add_unset net/bluetooth/hci_conn.c:1051 [inline] hci_connect_acl+0x16c/0x4e0 net/bluetooth/hci_conn.c:1634 pair_device+0x418/0xa70 net/bluetooth/mgmt.c:3556 hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719 hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:727 sock_write_iter+0x258/0x330 net/socket.c:1131 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x54b/0xa90 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7fFreed by task 103680: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x18e/0x440 mm/slub.c:4842 device_release+0x9c/0x1c0 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22b/0x480 lib/kobject.c:737 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x8ff/0xcb0 net/bluetooth/hci_conn.c:1173 hci_conn_complete_evt+0x3c7/0x1040 net/bluetooth/hci_event.c:3199 hci_event_func net/bluetooth/hci_event.c:7477 [inline] hci_event_packet+0x7e0/0x1200 net/bluetooth/hci_event.c:7531 hci_rx_work+0x46a/0xe80 net/bluetooth/hci_core.c:4070 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/sour---truncated---(CVE-2025-39982)

In the Linux kernel, the iMON driver has a race condition vulnerability. The issue stems from imon_disconnect() improperly releasing the usb_device reference without coordinating with active users of the device. Specifically, the fields usbdev_intf0 and usbdev_intf1 are not protected by the users counter (ictx->users). During probe, imon_init_intf0 or imon_init_intf1 increments the usb_device reference count depending on the interface. However, during disconnect, usb_put_dev is called unconditionally, regardless of actual usage. This can lead to a use-after-free (UAF) of the usb_device pointer if vfd_write or other operations are still in progress after disconnect.(CVE-2025-39993)

In the Linux kernel, a buffer overflow vulnerability exists in the target_lu_gp_members_show function in target_core_configfs.c. The vulnerability arises from the usage of snprintf to write into the buffer "buf" without checking the return value length. When the total formatted string length exceeds LU_GROUP_NAME_BUF (256 bytes), it may cause a buffer overflow. Since snprintf() returns the total number of bytes that would have been written, this value may exceed the buffer length (256 bytes) passed to memcpy(), ultimately causing the memcpy function to report a buffer overflow error. Adding an additional check of the return value of snprintf() can avoid this buffer overflow.(CVE-2025-39998)

In the Linux kernel, the following vulnerability has been resolved:crypto: essiv - Check ssize for decryption and in-place encryptionMove the ssize check to the start in essiv_aead_crypt so thatit s also checked for decryption and in-place encryption.(CVE-2025-40019)

Severity

7.0 (High)


                    
                      CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2024-53168	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-21913	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-37987	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-37995	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-38668	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39679	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39724	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39806	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39898	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39967	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39982	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39993	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39998	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-40019	ADVISORY

JSON

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{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "bpftool-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "bpftool-debuginfo-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-debuginfo-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-debugsource-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-devel-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-headers-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-source-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-tools-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-tools-debuginfo-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "kernel-tools-devel-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "perf-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "perf-debuginfo-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "python3-perf-6.6.0-114.0.0.106.oe2403.aarch64.rpm",
          "python3-perf-debuginfo-6.6.0-114.0.0.106.oe2403.aarch64.rpm"
        ],
        "src": [
          "kernel-6.6.0-114.0.0.106.oe2403.src.rpm"
        ],
        "x86_64": [
          "bpftool-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "bpftool-debuginfo-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-debuginfo-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-debugsource-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-devel-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-headers-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-source-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-tools-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-tools-debuginfo-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "kernel-tools-devel-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "perf-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "perf-debuginfo-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "python3-perf-6.6.0-114.0.0.106.oe2403.x86_64.rpm",
          "python3-perf-debuginfo-6.6.0-114.0.0.106.oe2403.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-24.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.6.0-114.0.0.106.oe2403"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\n\nIn the Linux kernel, the following vulnerability has been resolved:sunrpc: fix one UAF issue caused by sunrpc kernel tcp socketBUG: KASAN: slab-use-after-free in tcp_write_timer_handler+0x156/0x3e0Read of size 1 at addr ffff888111f322cd by task swapper/0/0CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc4-dirty #7Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1Call Trace: \u0026lt;IRQ\u0026gt; dump_stack_lvl+0x68/0xa0 print_address_description.constprop.0+0x2c/0x3d0 print_report+0xb4/0x270 kasan_report+0xbd/0xf0 tcp_write_timer_handler+0x156/0x3e0 tcp_write_timer+0x66/0x170 call_timer_fn+0xfb/0x1d0 __run_timers+0x3f8/0x480 run_timer_softirq+0x9b/0x100 handle_softirqs+0x153/0x390 __irq_exit_rcu+0x103/0x120 irq_exit_rcu+0xe/0x20 sysvec_apic_timer_interrupt+0x76/0x90 \u0026lt;/IRQ\u0026gt; \u0026lt;TASK\u0026gt; asm_sysvec_apic_timer_interrupt+0x1a/0x20RIP: 0010:default_idle+0xf/0x20Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 f8 25 00 fb f4 \u0026lt;fa\u0026gt; c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90RSP: 0018:ffffffffa2007e28 EFLAGS: 00000242RAX: 00000000000f3b31 RBX: 1ffffffff4400fc7 RCX: ffffffffa09c3196RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9f00590fRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed102360835dR10: ffff88811b041aeb R11: 0000000000000001 R12: 0000000000000000R13: ffffffffa202d7c0 R14: 0000000000000000 R15: 00000000000147d0 default_idle_call+0x6b/0xa0 cpuidle_idle_call+0x1af/0x1f0 do_idle+0xbc/0x130 cpu_startup_entry+0x33/0x40 rest_init+0x11f/0x210 start_kernel+0x39a/0x420 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0x97/0xa0 common_startup_64+0x13e/0x141 \u0026lt;/TASK\u0026gt;Allocated by task 595: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x87/0x90 kmem_cache_alloc_noprof+0x12b/0x3f0 copy_net_ns+0x94/0x380 create_new_namespaces+0x24c/0x500 unshare_nsproxy_namespaces+0x75/0xf0 ksys_unshare+0x24e/0x4f0 __x64_sys_unshare+0x1f/0x30 do_syscall_64+0x70/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7eFreed by task 100: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x54/0x70 kmem_cache_free+0x156/0x5d0 cleanup_net+0x5d3/0x670 process_one_work+0x776/0xa90 worker_thread+0x2e2/0x560 kthread+0x1a8/0x1f0 ret_from_fork+0x34/0x60 ret_from_fork_asm+0x1a/0x30Reproduction script:mkdir -p /mnt/nfssharemkdir -p /mnt/nfs/netns_1mkfs.ext4 /dev/sdbmount /dev/sdb /mnt/nfssharesystemctl restart nfs-serverchmod 777 /mnt/nfsshareexportfs -i -o rw,no_root_squash *:/mnt/nfsshareip netns add netns_1ip link add name veth_1_peer type veth peer veth_1ifconfig veth_1_peer 11.11.0.254 upip link set veth_1 netns netns_1ip netns exec netns_1 ifconfig veth_1 11.11.0.1ip netns exec netns_1 /root/iptables -A OUTPUT -d 11.11.0.254 -p tcp   --tcp-flags FIN FIN  -j DROP(note: In my environment, a DESTROY_CLIENTID operation is always sent immediately, breaking the nfs tcp connection.)ip netns exec netns_1 timeout -s 9 300 mount -t nfs -o proto=tcp,vers=4.1   11.11.0.254:/mnt/nfsshare /mnt/nfs/netns_1ip netns del netns_1The reason here is that the tcp socket in netns_1 (nfs side) has beenshutdown and closed (done in xs_destroy), but the FIN message (with ack)is discarded, and the nfsd side keeps sending retransmission messages.As a result, when the tcp sock in netns_1 processes the received message,it sends the message (FIN message) in the sending queue, and the tcp timeris re-established. When the network namespace is deleted, the net structureaccessed by tcp s timer handler function causes problems.To fix this problem, let s hold netns refcnt for the tcp kernel socket asdone in other modules. This is an ugly hack which can easily be backportedto earlier kernels. A proper fix which cleans up the interfaces willfollow, but may not be so easy to backport.(CVE-2024-53168)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nx86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range()\n\nXen doesn\u0026apos;t offer MSR_FAM10H_MMIO_CONF_BASE to all guests.  This results\nin the following warning:\n\n  unchecked MSR access error: RDMSR from 0xc0010058 at rIP: 0xffffffff8101d19f (xen_do_read_msr+0x7f/0xa0)\n  Call Trace:\n   xen_read_msr+0x1e/0x30\n   amd_get_mmconfig_range+0x2b/0x80\n   quirk_amd_mmconfig_area+0x28/0x100\n   pnp_fixup_device+0x39/0x50\n   __pnp_add_device+0xf/0x150\n   pnp_add_device+0x3d/0x100\n   pnpacpi_add_device_handler+0x1f9/0x280\n   acpi_ns_get_device_callback+0x104/0x1c0\n   acpi_ns_walk_namespace+0x1d0/0x260\n   acpi_get_devices+0x8a/0xb0\n   pnpacpi_init+0x50/0x80\n   do_one_initcall+0x46/0x2e0\n   kernel_init_freeable+0x1da/0x2f0\n   kernel_init+0x16/0x1b0\n   ret_from_fork+0x30/0x50\n   ret_from_fork_asm+0x1b/0x30\n\nbased on quirks for a \u0026quot;PNP0c01\u0026quot; device.  Treating MMCFG as disabled is the\nright course of action, so no change is needed there.\n\nThis was most likely exposed by fixing the Xen MSR accessors to not be\nsilently-safe.(CVE-2025-21913)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npds_core: Prevent possible adminq overflow/stuck condition\n\nThe pds_core\u0026apos;s adminq is protected by the adminq_lock, which prevents\nmore than 1 command to be posted onto it at any one time. This makes it\nso the client drivers cannot simultaneously post adminq commands.\nHowever, the completions happen in a different context, which means\nmultiple adminq commands can be posted sequentially and all waiting\non completion.\n\nOn the FW side, the backing adminq request queue is only 16 entries\nlong and the retry mechanism and/or overflow/stuck prevention is\nlacking. This can cause the adminq to get stuck, so commands are no\nlonger processed and completions are no longer sent by the FW.\n\nAs an initial fix, prevent more than 16 outstanding adminq commands so\nthere\u0026apos;s no way to cause the adminq from getting stuck. This works\nbecause the backing adminq request queue will never have more than 16\npending adminq commands, so it will never overflow. This is done by\nreducing the adminq depth to 16.(CVE-2025-37987)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmodule: ensure that kobject_put() is safe for module type kobjects\n\nIn \u0026apos;lookup_or_create_module_kobject()\u0026apos;, an internal kobject is created\nusing \u0026apos;module_ktype\u0026apos;. So call to \u0026apos;kobject_put()\u0026apos; on error handling\npath causes an attempt to use an uninitialized completion pointer in\n\u0026apos;module_kobject_release()\u0026apos;. In this scenario, we just want to release\nkobject without an extra synchronization required for a regular module\nunloading process, so adding an extra check whether \u0026apos;complete()\u0026apos; is\nactually required makes \u0026apos;kobject_put()\u0026apos; safe.(CVE-2025-37995)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nregulator: core: fix NULL dereference on unbind due to stale coupling data\n\nFailing to reset coupling_desc.n_coupled after freeing coupled_rdevs can\nlead to NULL pointer dereference when regulators are accessed post-unbind.\n\nThis can happen during runtime PM or other regulator operations that rely\non coupling metadata.\n\nFor example, on ridesx4, unbinding the \u0026apos;reg-dummy\u0026apos; platform device triggers\na panic in regulator_lock_recursive() due to stale coupling state.\n\nEnsure n_coupled is set to 0 to prevent access to invalid pointers.(CVE-2025-38668)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/nvif: Fix potential memory leak in nvif_vmm_ctor().\n\nWhen the nvif_vmm_type is invalid, we will return error directly\nwithout freeing the args in nvif_vmm_ctor(), which leading a memory\nleak. Fix it by setting the ret -EINVAL and goto done.(CVE-2025-39679)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: fix panic due to PSLVERR\n\nWhen the PSLVERR_RESP_EN parameter is set to 1, the device generates\nan error response if an attempt is made to read an empty RBR (Receive\nBuffer Register) while the FIFO is enabled.\n\nIn serial8250_do_startup(), calling serial_port_out(port, UART_LCR,\nUART_LCR_WLEN8) triggers dw8250_check_lcr(), which invokes\ndw8250_force_idle() and serial8250_clear_and_reinit_fifos(). The latter\nfunction enables the FIFO via serial_out(p, UART_FCR, p-\u0026gt;fcr).\nExecution proceeds to the serial_port_in(port, UART_RX).\nThis satisfies the PSLVERR trigger condition.\n\nWhen another CPU (e.g., using printk()) is accessing the UART (UART\nis busy), the current CPU fails the check (value \u0026amp; ~UART_LCR_SPAR) ==\n(lcr \u0026amp; ~UART_LCR_SPAR) in dw8250_check_lcr(), causing it to enter\ndw8250_force_idle().\n\nPut serial_port_out(port, UART_LCR, UART_LCR_WLEN8) under the port-\u0026gt;lock\nto fix this issue.\n\nPanic backtrace:\n[    0.442336] Oops - unknown exception [#1]\n[    0.442343] epc : dw8250_serial_in32+0x1e/0x4a\n[    0.442351]  ra : serial8250_do_startup+0x2c8/0x88e\n...\n[    0.442416] console_on_rootfs+0x26/0x70(CVE-2025-39724)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nHID: multitouch: fix slab out-of-bounds access in mt_report_fixup()\n\nA malicious HID device can trigger a slab out-of-bounds during\nmt_report_fixup() by passing in report descriptor smaller than\n607 bytes. mt_report_fixup() attempts to patch byte offset 607\nof the descriptor with 0x25 by first checking if byte offset\n607 is 0x15 however it lacks bounds checks to verify if the\ndescriptor is big enough before conducting this check. Fix\nthis bug by ensuring the descriptor size is at least 608\nbytes before accessing it.\n\nBelow is the KASAN splat after the out of bounds access happens:\n\n[   13.671954] ==================================================================\n[   13.672667] BUG: KASAN: slab-out-of-bounds in mt_report_fixup+0x103/0x110\n[   13.673297] Read of size 1 at addr ffff888103df39df by task kworker/0:1/10\n[   13.673297]\n[   13.673297] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.15.0-00005-gec5d573d83f4-dirty #3\n[   13.673297] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/04\n[   13.673297] Call Trace:\n[   13.673297]  \u0026lt;TASK\u0026gt;\n[   13.673297]  dump_stack_lvl+0x5f/0x80\n[   13.673297]  print_report+0xd1/0x660\n[   13.673297]  kasan_report+0xe5/0x120\n[   13.673297]  __asan_report_load1_noabort+0x18/0x20\n[   13.673297]  mt_report_fixup+0x103/0x110\n[   13.673297]  hid_open_report+0x1ef/0x810\n[   13.673297]  mt_probe+0x422/0x960\n[   13.673297]  hid_device_probe+0x2e2/0x6f0\n[   13.673297]  really_probe+0x1c6/0x6b0\n[   13.673297]  __driver_probe_device+0x24f/0x310\n[   13.673297]  driver_probe_device+0x4e/0x220\n[   13.673297]  __device_attach_driver+0x169/0x320\n[   13.673297]  bus_for_each_drv+0x11d/0x1b0\n[   13.673297]  __device_attach+0x1b8/0x3e0\n[   13.673297]  device_initial_probe+0x12/0x20\n[   13.673297]  bus_probe_device+0x13d/0x180\n[   13.673297]  device_add+0xe3a/0x1670\n[   13.673297]  hid_add_device+0x31d/0xa40\n[...](CVE-2025-39806)\n\nRejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.(CVE-2025-39898)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: fix integer overflow in fbcon_do_set_font\n\nFix integer overflow vulnerabilities in fbcon_do_set_font() where font\nsize calculations could overflow when handling user-controlled font\nparameters.\n\nThe vulnerabilities occur when:\n1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount\n   multiplication with user-controlled values that can overflow.\n2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow\n3. This results in smaller allocations than expected, leading to buffer\n   overflows during font data copying.\n\nAdd explicit overflow checking using check_mul_overflow() and\ncheck_add_overflow() kernel helpers to safety validate all size\ncalculations before allocation.(CVE-2025-39967)\n\nIn the Linux kernel, the following vulnerability has been resolved:Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_syncThis fixes the following UFA in hci_acl_create_conn_sync where aconnection still pending is command submission (conn-\u0026gt;state == BT_OPEN)maybe freed, also since this also can happen with the likes ofhci_le_create_conn_sync fix it as well:BUG: KASAN: slab-use-after-free in hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861Write of size 2 at addr ffff88805ffcc038 by task kworker/u11:2/9541CPU: 1 UID: 0 PID: 9541 Comm: kworker/u11:2 Not tainted 6.16.0-rc7 #3 PREEMPT(full)Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014Workqueue: hci3 hci_cmd_sync_workCall Trace: \u0026lt;TASK\u0026gt; dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x230 mm/kasan/report.c:480 kasan_report+0x118/0x150 mm/kasan/report.c:593 hci_acl_create_conn_sync+0x5ef/0x790 net/bluetooth/hci_sync.c:6861 hci_cmd_sync_work+0x210/0x3a0 net/bluetooth/hci_sync.c:332 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/source/fuzzing/kernel/kasan/linux-6.16-rc7/arch/x86/entry/entry_64.S:245 \u0026lt;/TASK\u0026gt;Allocated by task 123736: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] __hci_conn_add+0x233/0x1b30 net/bluetooth/hci_conn.c:939 hci_conn_add_unset net/bluetooth/hci_conn.c:1051 [inline] hci_connect_acl+0x16c/0x4e0 net/bluetooth/hci_conn.c:1634 pair_device+0x418/0xa70 net/bluetooth/mgmt.c:3556 hci_mgmt_cmd+0x9c9/0xef0 net/bluetooth/hci_sock.c:1719 hci_sock_sendmsg+0x6ca/0xef0 net/bluetooth/hci_sock.c:1839 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:727 sock_write_iter+0x258/0x330 net/socket.c:1131 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x54b/0xa90 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7fFreed by task 103680: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x18e/0x440 mm/slub.c:4842 device_release+0x9c/0x1c0 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22b/0x480 lib/kobject.c:737 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x8ff/0xcb0 net/bluetooth/hci_conn.c:1173 hci_conn_complete_evt+0x3c7/0x1040 net/bluetooth/hci_event.c:3199 hci_event_func net/bluetooth/hci_event.c:7477 [inline] hci_event_packet+0x7e0/0x1200 net/bluetooth/hci_event.c:7531 hci_rx_work+0x46a/0xe80 net/bluetooth/hci_core.c:4070 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 home/kwqcheii/sour---truncated---(CVE-2025-39982)\n\nIn the Linux kernel, the iMON driver has a race condition vulnerability. The issue stems from imon_disconnect() improperly releasing the usb_device reference without coordinating with active users of the device. Specifically, the fields usbdev_intf0 and usbdev_intf1 are not protected by the users counter (ictx-\u0026gt;users). During probe, imon_init_intf0 or imon_init_intf1 increments the usb_device reference count depending on the interface. However, during disconnect, usb_put_dev is called unconditionally, regardless of actual usage. This can lead to a use-after-free (UAF) of the usb_device pointer if vfd_write or other operations are still in progress after disconnect.(CVE-2025-39993)\n\nIn the Linux kernel, a buffer overflow vulnerability exists in the target_lu_gp_members_show function in target_core_configfs.c. The vulnerability arises from the usage of snprintf to write into the buffer \u0026quot;buf\u0026quot; without checking the return value length. When the total formatted string length exceeds LU_GROUP_NAME_BUF (256 bytes), it may cause a buffer overflow. Since snprintf() returns the total number of bytes that would have been written, this value may exceed the buffer length (256 bytes) passed to memcpy(), ultimately causing the memcpy function to report a buffer overflow error. Adding an additional check of the return value of snprintf() can avoid this buffer overflow.(CVE-2025-39998)\n\nIn the Linux kernel, the following vulnerability has been resolved:crypto: essiv - Check ssize for decryption and in-place encryptionMove the ssize check to the start in essiv_aead_crypt so thatit s also checked for decryption and in-place encryption.(CVE-2025-40019)",
  "id": "OESA-2025-2556",
  "modified": "2026-08-06T11:09:38Z",
  "published": "2025-10-31T11:09:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2556"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53168"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21913"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37987"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37995"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38668"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39679"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39724"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39806"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39898"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39967"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39982"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39993"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39998"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40019"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2024-53168",
    "CVE-2025-21913",
    "CVE-2025-37987",
    "CVE-2025-37995",
    "CVE-2025-38668",
    "CVE-2025-39679",
    "CVE-2025-39724",
    "CVE-2025-39806",
    "CVE-2025-39898",
    "CVE-2025-39967",
    "CVE-2025-39982",
    "CVE-2025-39993",
    "CVE-2025-39998",
    "CVE-2025-40019"
  ]
}

OESA-2026-1569 (CVE-2024-57979)

Vulnerability from osv_openeuler – Published: 2026-03-15 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

kernel security update

Details

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

pps: Fix a use-after-free

On a board running ntpd and gpsd, I'm seeing a consistent use-after-free in sys_exit() from gpsd when rebooting:

pps pps1: removed
------------[ cut here ]------------
kobject: &apos;(null)&apos; (00000000db4bec24): is not initialized, yet kobject_put() is being called.
WARNING: CPU: 2 PID: 440 at lib/kobject.c:734 kobject_put+0x120/0x150
CPU: 2 UID: 299 PID: 440 Comm: gpsd Not tainted 6.11.0-rc6-00308-gb31c44928842 #1
Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)
pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : kobject_put+0x120/0x150
lr : kobject_put+0x120/0x150
sp : ffffffc0803d3ae0
x29: ffffffc0803d3ae0 x28: ffffff8042dc9738 x27: 0000000000000001
x26: 0000000000000000 x25: ffffff8042dc9040 x24: ffffff8042dc9440
x23: ffffff80402a4620 x22: ffffff8042ef4bd0 x21: ffffff80405cb600
x20: 000000000008001b x19: ffffff8040b3b6e0 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 696e6920746f6e20
x14: 7369203a29343263 x13: 205d303434542020 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 kobject_put+0x120/0x150
 cdev_put+0x20/0x3c
 __fput+0x2c4/0x2d8
 ____fput+0x1c/0x38
 task_work_run+0x70/0xfc
 do_exit+0x2a0/0x924
 do_group_exit+0x34/0x90
 get_signal+0x7fc/0x8c0
 do_signal+0x128/0x13b4
 do_notify_resume+0xdc/0x160
 el0_svc+0xd4/0xf8
 el0t_64_sync_handler+0x140/0x14c
 el0t_64_sync+0x190/0x194
---[ end trace 0000000000000000 ]---

...followed by more symptoms of corruption, with similar stacks:

refcount_t: underflow; use-after-free.
kernel BUG at lib/list_debug.c:62!
Kernel panic - not syncing: Oops - BUG: Fatal exception

This happens because pps_device_destruct() frees the pps_device with the embedded cdev immediately after calling cdev_del(), but, as the comment above cdev_del() notes, fops for previously opened cdevs are still callable even after cdev_del() returns. I think this bug has always been there: I can't explain why it suddenly started happening every time I reboot this particular board.

In commit d953e0e837e6 ("pps: Fix a use-after free bug when unregistering a source."), George Spelvin suggested removing the embedded cdev. That seems like the simplest way to fix this, so I've implemented his suggestion, using __register_chrdev() with pps_idr becoming the source of truth for which minor corresponds to which device.

But now that pps_idr defines userspace visibility instead of cdev_add(), we need to be sure the pps->dev refcount can't reach zero while userspace can still find it again. So, the idr_remove() call moves to pps_unregister_cdev(), and pps_idr now holds a reference to pps->dev.

pps_core: source serial1 got cdev (251:1)
&lt;...&gt;
pps pps1: removed
pps_core: unregistering pps1
pps_core: deallocating pps1(CVE-2024-57979)

In the Linux kernel, the following vulnerability has been resolved:

mm/slub: avoid accessing metadata when pointer is invalid in object_err()

object_err() reports details of an object for further debugging, such as the freelist pointer, redzone, etc. However, if the pointer is invalid, attempting to access object metadata can lead to a crash since it does not point to a valid object.

One known path to the crash is when alloc_consistency_checks() determines the pointer to the allocated object is invalid because of a freelist corruption, and calls object_err() to report it. The debug code should report and handle the corruption gracefully and not crash in the process.

In case the pointer is NULL or check_valid_pointer() returns false for the pointer, only print the pointer value and skip accessing metadata.(CVE-2025-39902)

In the Linux kernel, the following vulnerability has been resolved:

fbcon: fix integer overflow in fbcon_do_set_font

Fix integer overflow vulnerabilities in fbcon_do_set_font() where font size calculations could overflow when handling user-controlled font parameters.

Add explicit overflow checking using check_mul_overflow() and check_add_overflow() kernel helpers to safety validate all size calculations before allocation.(CVE-2025-39967)

In the Linux kernel, the following vulnerability has been resolved:

net: hv_netvsc: reject RSS hash key programming without RX indirection table

RSS configuration requires a valid RX indirection table. When the device reports a single receive queue, rndis_filter_device_add() does not allocate an indirection table, accepting RSS hash key updates in this state leads to a hang.

Fix this by gating netvsc_set_rxfh() on ndc->rx_table_sz and return -EOPNOTSUPP when the table is absent. This aligns set_rxfh with the device capabilities and prevents incorrect behavior.(CVE-2026-23054)

In the Linux kernel, the following vulnerability has been resolved:

tracing: Add recursion protection in kernel stack trace recording

A bug was reported about an infinite recursion caused by tracing the rcu events with the kernel stack trace trigger enabled. The stack trace code called back into RCU which then called the stack trace again.

Expand the ftrace recursion protection to add a set of bits to protect events from recursion. Each bit represents the context that the event is in (normal, softirq, interrupt and NMI).

Have the stack trace code use the interrupt context to protect against recursion.

Note, the bug showed an issue in both the RCU code as well as the tracing stacktrace code. This only handles the tracing stack trace side of the bug. The RCU fix will be handled separately.(CVE-2026-23138)

In the Linux kernel, a race condition vulnerability exists in the PCM trigger callback of ALSA driver. The driver tries to check the PCM state and stop the stream of the tied substream in the corresponding cable. Since both check and stop operations are performed outside the cable lock, this may result in UAF (Use-After-Free) when a program attempts to trigger frequently while opening/closing the tied stream.(CVE-2026-23191)

In the Linux kernel, the following vulnerability has been resolved:

macvlan: fix error recovery in macvlan_common_newlink()

valis provided a nice repro to crash the kernel:

ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2

ip link add mv0 link p2 type macvlan mode source ip link add invalid% link p2 type macvlan mode source macaddr add 00:00:00:00:00:20

ping -c1 -I p1 1.2.3.4

He also gave a very detailed analysis:

The issue is triggered when a new macvlan link is created with MACVLAN_MODE_SOURCE mode and MACVLAN_MACADDR_ADD (or MACVLAN_MACADDR_SET) parameter, lower device already has a macvlan port and register_netdevice() called from macvlan_common_newlink() fails (e.g. because of the invalid link name).

In this case macvlan_hash_add_source is called from macvlan_change_sources() / macvlan_common_newlink():

This adds a reference to vlan to the port's vlan_source_hash using macvlan_source_entry.

vlan is a pointer to the priv data of the link that is being created.

When register_netdevice() fails, the error is returned from macvlan_newlink() to rtnl_newlink_create():

    if (ops-&gt;newlink)
            err = ops-&gt;newlink(dev, &amp;params, extack);
    else
            err = register_netdevice(dev);
    if (err &lt; 0) {
            free_netdev(dev);
            goto out;
    }

and free_netdev() is called, causing a kvfree() on the struct net_device that is still referenced in the source entry attached to the lower device's macvlan port.

Now all packets sent on the macvlan port with a matching source mac address will trigger a use-after-free in macvlan_forward_source().

</quote valis>

With all that, my fix is to make sure we call macvlan_flush_sources() regardless of @create value whenever "goto destroy_macvlan_port;" path is taken.

Many thanks to valis for following up on this issue.(CVE-2026-23209)

Severity

7.8 (High)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2024-57979	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39902	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-39967	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-23054	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-23138	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-23191	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-23209	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "bpftool-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "bpftool-debuginfo-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-debuginfo-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-debugsource-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-devel-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-headers-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-source-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-tools-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-tools-debuginfo-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "kernel-tools-devel-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "perf-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "perf-debuginfo-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "python3-perf-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm",
          "python3-perf-debuginfo-5.10.0-304.0.0.207.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "kernel-5.10.0-304.0.0.207.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "bpftool-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "bpftool-debuginfo-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-debuginfo-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-debugsource-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-devel-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-headers-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-source-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-tools-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-tools-debuginfo-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "kernel-tools-devel-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "perf-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "perf-debuginfo-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "python3-perf-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm",
          "python3-perf-debuginfo-5.10.0-304.0.0.207.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "kernel",
        "purl": "pkg:rpm/openEuler/kernel\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.0-304.0.0.207.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "The Linux Kernel, the operating system core itself.\r\n\r\nSecurity Fix(es):\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npps: Fix a use-after-free\n\nOn a board running ntpd and gpsd, I\u0026apos;m seeing a consistent use-after-free\nin sys_exit() from gpsd when rebooting:\n\n    pps pps1: removed\n    ------------[ cut here ]------------\n    kobject: \u0026apos;(null)\u0026apos; (00000000db4bec24): is not initialized, yet kobject_put() is being called.\n    WARNING: CPU: 2 PID: 440 at lib/kobject.c:734 kobject_put+0x120/0x150\n    CPU: 2 UID: 299 PID: 440 Comm: gpsd Not tainted 6.11.0-rc6-00308-gb31c44928842 #1\n    Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)\n    pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n    pc : kobject_put+0x120/0x150\n    lr : kobject_put+0x120/0x150\n    sp : ffffffc0803d3ae0\n    x29: ffffffc0803d3ae0 x28: ffffff8042dc9738 x27: 0000000000000001\n    x26: 0000000000000000 x25: ffffff8042dc9040 x24: ffffff8042dc9440\n    x23: ffffff80402a4620 x22: ffffff8042ef4bd0 x21: ffffff80405cb600\n    x20: 000000000008001b x19: ffffff8040b3b6e0 x18: 0000000000000000\n    x17: 0000000000000000 x16: 0000000000000000 x15: 696e6920746f6e20\n    x14: 7369203a29343263 x13: 205d303434542020 x12: 0000000000000000\n    x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\n    x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000\n    x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n    x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000\n    Call trace:\n     kobject_put+0x120/0x150\n     cdev_put+0x20/0x3c\n     __fput+0x2c4/0x2d8\n     ____fput+0x1c/0x38\n     task_work_run+0x70/0xfc\n     do_exit+0x2a0/0x924\n     do_group_exit+0x34/0x90\n     get_signal+0x7fc/0x8c0\n     do_signal+0x128/0x13b4\n     do_notify_resume+0xdc/0x160\n     el0_svc+0xd4/0xf8\n     el0t_64_sync_handler+0x140/0x14c\n     el0t_64_sync+0x190/0x194\n    ---[ end trace 0000000000000000 ]---\n\n...followed by more symptoms of corruption, with similar stacks:\n\n    refcount_t: underflow; use-after-free.\n    kernel BUG at lib/list_debug.c:62!\n    Kernel panic - not syncing: Oops - BUG: Fatal exception\n\nThis happens because pps_device_destruct() frees the pps_device with the\nembedded cdev immediately after calling cdev_del(), but, as the comment\nabove cdev_del() notes, fops for previously opened cdevs are still\ncallable even after cdev_del() returns. I think this bug has always\nbeen there: I can\u0026apos;t explain why it suddenly started happening every time\nI reboot this particular board.\n\nIn commit d953e0e837e6 (\u0026quot;pps: Fix a use-after free bug when\nunregistering a source.\u0026quot;), George Spelvin suggested removing the\nembedded cdev. That seems like the simplest way to fix this, so I\u0026apos;ve\nimplemented his suggestion, using __register_chrdev() with pps_idr\nbecoming the source of truth for which minor corresponds to which\ndevice.\n\nBut now that pps_idr defines userspace visibility instead of cdev_add(),\nwe need to be sure the pps-\u0026gt;dev refcount can\u0026apos;t reach zero while\nuserspace can still find it again. So, the idr_remove() call moves to\npps_unregister_cdev(), and pps_idr now holds a reference to pps-\u0026gt;dev.\n\n    pps_core: source serial1 got cdev (251:1)\n    \u0026lt;...\u0026gt;\n    pps pps1: removed\n    pps_core: unregistering pps1\n    pps_core: deallocating pps1(CVE-2024-57979)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmm/slub: avoid accessing metadata when pointer is invalid in object_err()\n\nobject_err() reports details of an object for further debugging, such as\nthe freelist pointer, redzone, etc. However, if the pointer is invalid,\nattempting to access object metadata can lead to a crash since it does\nnot point to a valid object.\n\nOne known path to the crash is when alloc_consistency_checks()\ndetermines the pointer to the allocated object is invalid because of a\nfreelist corruption, and calls object_err() to report it. The debug code\nshould report and handle the corruption gracefully and not crash in the\nprocess.\n\nIn case the pointer is NULL or check_valid_pointer() returns false for\nthe pointer, only print the pointer value and skip accessing metadata.(CVE-2025-39902)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: fix integer overflow in fbcon_do_set_font\n\nFix integer overflow vulnerabilities in fbcon_do_set_font() where font\nsize calculations could overflow when handling user-controlled font\nparameters.\n\nThe vulnerabilities occur when:\n1. CALC_FONTSZ(h, pitch, charcount) performs h * pith * charcount\n   multiplication with user-controlled values that can overflow.\n2. FONT_EXTRA_WORDS * sizeof(int) + size addition can also overflow\n3. This results in smaller allocations than expected, leading to buffer\n   overflows during font data copying.\n\nAdd explicit overflow checking using check_mul_overflow() and\ncheck_add_overflow() kernel helpers to safety validate all size\ncalculations before allocation.(CVE-2025-39967)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: hv_netvsc: reject RSS hash key programming without RX indirection table\n\nRSS configuration requires a valid RX indirection table. When the device\nreports a single receive queue, rndis_filter_device_add() does not\nallocate an indirection table, accepting RSS hash key updates in this\nstate leads to a hang.\n\nFix this by gating netvsc_set_rxfh() on ndc-\u0026gt;rx_table_sz and return\n-EOPNOTSUPP when the table is absent. This aligns set_rxfh with the device\ncapabilities and prevents incorrect behavior.(CVE-2026-23054)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add recursion protection in kernel stack trace recording\n\nA bug was reported about an infinite recursion caused by tracing the rcu\nevents with the kernel stack trace trigger enabled. The stack trace code\ncalled back into RCU which then called the stack trace again.\n\nExpand the ftrace recursion protection to add a set of bits to protect\nevents from recursion. Each bit represents the context that the event is\nin (normal, softirq, interrupt and NMI).\n\nHave the stack trace code use the interrupt context to protect against\nrecursion.\n\nNote, the bug showed an issue in both the RCU code as well as the tracing\nstacktrace code. This only handles the tracing stack trace side of the\nbug. The RCU fix will be handled separately.(CVE-2026-23138)\n\nIn the Linux kernel, a race condition vulnerability exists in the PCM trigger callback of ALSA driver. The driver tries to check the PCM state and stop the stream of the tied substream in the corresponding cable. Since both check and stop operations are performed outside the cable lock, this may result in UAF (Use-After-Free) when a program attempts to trigger frequently while opening/closing the tied stream.(CVE-2026-23191)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmacvlan: fix error recovery in macvlan_common_newlink()\n\nvalis provided a nice repro to crash the kernel:\n\nip link add p1 type veth peer p2\nip link set address 00:00:00:00:00:20 dev p1\nip link set up dev p1\nip link set up dev p2\n\nip link add mv0 link p2 type macvlan mode source\nip link add invalid% link p2 type macvlan mode source macaddr add 00:00:00:00:00:20\n\nping -c1 -I p1 1.2.3.4\n\nHe also gave a very detailed analysis:\n\n\u0026lt;quote valis\u0026gt;\n\nThe issue is triggered when a new macvlan link is created  with\nMACVLAN_MODE_SOURCE mode and MACVLAN_MACADDR_ADD (or\nMACVLAN_MACADDR_SET) parameter, lower device already has a macvlan\nport and register_netdevice() called from macvlan_common_newlink()\nfails (e.g. because of the invalid link name).\n\nIn this case macvlan_hash_add_source is called from\nmacvlan_change_sources() / macvlan_common_newlink():\n\nThis adds a reference to vlan to the port\u0026apos;s vlan_source_hash using\nmacvlan_source_entry.\n\nvlan is a pointer to the priv data of the link that is being created.\n\nWhen register_netdevice() fails, the error is returned from\nmacvlan_newlink() to rtnl_newlink_create():\n\n        if (ops-\u0026gt;newlink)\n                err = ops-\u0026gt;newlink(dev, \u0026amp;params, extack);\n        else\n                err = register_netdevice(dev);\n        if (err \u0026lt; 0) {\n                free_netdev(dev);\n                goto out;\n        }\n\nand free_netdev() is called, causing a kvfree() on the struct\nnet_device that is still referenced in the source entry attached to\nthe lower device\u0026apos;s macvlan port.\n\nNow all packets sent on the macvlan port with a matching source mac\naddress will trigger a use-after-free in macvlan_forward_source().\n\n\u0026lt;/quote valis\u0026gt;\n\nWith all that, my fix is to make sure we call macvlan_flush_sources()\nregardless of @create value whenever \u0026quot;goto destroy_macvlan_port;\u0026quot;\npath is taken.\n\nMany thanks to valis for following up on this issue.(CVE-2026-23209)",
  "id": "OESA-2026-1569",
  "modified": "2026-08-06T11:10:34Z",
  "published": "2026-03-15T11:10:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1569"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57979"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39902"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39967"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23054"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23138"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23191"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23209"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kernel security update",
  "upstream": [
    "CVE-2024-57979",
    "CVE-2025-39902",
    "CVE-2025-39967",
    "CVE-2026-23054",
    "CVE-2026-23138",
    "CVE-2026-23191",
    "CVE-2026-23209"
  ]
}

OPENSUSE-SU-2025-20091-1

Vulnerability from csaf_opensuse - Published: 2025-11-26 17:04 - Updated: 2025-11-26 17:04

Summary

Security update for the Linux Kernel

Severity

Important

Scope

83 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 117 products

Open the full advisory

OPENSUSE-SU-2025:20091-1

Vulnerability from csaf_opensuse - Published: 2025-11-26 17:04 - Updated: 2026-09-20 21:47

Summary

Security update for the Linux Kernel

Severity

Important

Scope

83 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 117 products

Open the full advisory

SUSE-SU-2025:21040-1

Vulnerability from csaf_suse - Published: 2025-11-13 15:32 - Updated: 2026-10-04 11:07

Summary

Security update for the Linux Kernel

Severity

Important

Scope

191 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 11 products

Open the full advisory

SUSE-SU-2025:21052-1

Vulnerability from csaf_suse - Published: 2025-11-25 18:51 - Updated: 2026-10-04 11:07

Summary

Security update for the Linux Kernel

Severity

Important

Scope

191 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 4 products

Open the full advisory

SUSE-SU-2025:21056-1

Vulnerability from csaf_suse - Published: 2025-11-13 14:22 - Updated: 2026-10-04 11:07

Summary

Security update for the Linux Kernel

Severity

Important

Scope

191 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 17 products

Open the full advisory

SUSE-SU-2025:21064-1

Vulnerability from csaf_suse - Published: 2025-11-25 16:39 - Updated: 2026-10-04 11:07

Summary

Security update for the Linux Kernel

Severity

Important

Scope

191 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 7 products

Open the full advisory

SUSE-SU-2025:21080-1

Vulnerability from csaf_suse - Published: 2025-11-26 15:59 - Updated: 2026-09-20 18:22

Summary

Security update for the Linux Kernel

Severity

Important

Scope

83 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 28 products

Open the full advisory

SUSE-SU-2025:21147-1

Vulnerability from csaf_suse - Published: 2025-11-26 15:59 - Updated: 2026-09-20 18:23

Summary

Security update for the Linux Kernel

Severity

Important

Scope

83 vulnerabilities in this advisory, including CVE-2025-39967.

CVE-2025-39967

6.1 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Recommended: 100 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2025-39967 (GCVE-0-2025-39967)

OESA-2025-2556 (CVE-2024-53168)

OESA-2026-1569 (CVE-2024-57979)

Tags

Sightings

Nomenclature

Related by attack behaviour