Vulnerability-Lookup

alsa-2026:45114

Vulnerability from osv_almalinux

Published

2026-07-24 00:00

Modified

2026-07-31 09:12

Summary

Important: kernel security update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: fs/notify: call exportfs_encode_fid with s_umount (CVE-2025-40237)
kernel: scsi: core: Wake up the error handler when final completions race against each other (CVE-2026-23110)
kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)
kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099)
kernel: futex: Drop CLONE_THREAD requirement for private default hash alloc (CVE-2026-52973)
kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:45114	ADVISORY
	https://access.redhat.com/security/cve/CVE-2025-40237	REPORT
	https://access.redhat.com/security/cve/CVE-2026-23110	REPORT
	https://access.redhat.com/security/cve/CVE-2026-31692	REPORT
	https://access.redhat.com/security/cve/CVE-2026-46099	REPORT
	https://access.redhat.com/security/cve/CVE-2026-52973	REPORT
	https://access.redhat.com/security/cve/CVE-2026-53059	REPORT
	https://bugzilla.redhat.com/2418829	REPORT
	https://bugzilla.redhat.com/2436755	REPORT
	https://bugzilla.redhat.com/2464093	REPORT
	https://bugzilla.redhat.com/2481972	REPORT
	https://bugzilla.redhat.com/2492277	REPORT
	https://bugzilla.redhat.com/2492413	REPORT
	https://errata.almalinux.org/10/ALSA-2026-45114.html	ADVISORY

JSON

To clipboard

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  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.  \n\nSecurity Fix(es):  \n\n  * kernel: fs/notify: call exportfs_encode_fid with s_umount (CVE-2025-40237)\n  * kernel: scsi: core: Wake up the error handler when final completions race against each other (CVE-2026-23110)\n  * kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)\n  * kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099)\n  * kernel: futex: Drop CLONE_THREAD requirement for private default hash alloc (CVE-2026-52973)\n  * kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)\n\n\n",
  "id": "ALSA-2026:45114",
  "modified": "2026-07-31T09:12:00Z",
  "published": "2026-07-24T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:45114"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-40237"
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    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23110"
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    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31692"
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    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46099"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-52973"
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    {
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      "url": "https://access.redhat.com/security/cve/CVE-2026-53059"
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    {
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      "url": "https://bugzilla.redhat.com/2418829"
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      "url": "https://bugzilla.redhat.com/2436755"
    },
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      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464093"
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      "url": "https://bugzilla.redhat.com/2481972"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492277"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2492413"
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    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-45114.html"
    }
  ],
  "related": [
    "CVE-2025-40237",
    "CVE-2026-23110",
    "CVE-2026-31692",
    "CVE-2026-46099",
    "CVE-2026-52973",
    "CVE-2026-53059"
  ],
  "summary": "Important: kernel security update"
}

CVE-2025-40237 (GCVE-0-2025-40237)

Vulnerability from cvelistv5 – Published: 2025-12-04 15:31 – Updated: 2026-05-23 16:01

Title

fs/notify: call exportfs_encode_fid with s_umount

Summary

In the Linux kernel, the following vulnerability has been resolved: fs/notify: call exportfs_encode_fid with s_umount Calling intotify_show_fdinfo() on fd watching an overlayfs inode, while the overlayfs is being unmounted, can lead to dereferencing NULL ptr. This issue was found by syzkaller. Race Condition Diagram: Thread 1 Thread 2 -------- -------- generic_shutdown_super() shrink_dcache_for_umount sb->s_root = NULL | | vfs_read() | inotify_fdinfo() | * inode get from mark * | show_mark_fhandle(m, inode) | exportfs_encode_fid(inode, ..) | ovl_encode_fh(inode, ..) | ovl_check_encode_origin(inode) | * deref i_sb->s_root * | | v fsnotify_sb_delete(sb) Which then leads to: [ 32.133461] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI [ 32.134438] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 32.135032] CPU: 1 UID: 0 PID: 4468 Comm: systemd-coredum Not tainted 6.17.0-rc6 #22 PREEMPT(none) <snip registers, unreliable trace> [ 32.143353] Call Trace: [ 32.143732] ovl_encode_fh+0xd5/0x170 [ 32.144031] exportfs_encode_inode_fh+0x12f/0x300 [ 32.144425] show_mark_fhandle+0xbe/0x1f0 [ 32.145805] inotify_fdinfo+0x226/0x2d0 [ 32.146442] inotify_show_fdinfo+0x1c5/0x350 [ 32.147168] seq_show+0x530/0x6f0 [ 32.147449] seq_read_iter+0x503/0x12a0 [ 32.148419] seq_read+0x31f/0x410 [ 32.150714] vfs_read+0x1f0/0x9e0 [ 32.152297] ksys_read+0x125/0x240 IOW ovl_check_encode_origin derefs inode->i_sb->s_root, after it was set to NULL in the unmount path. Fix it by protecting calling exportfs_encode_fid() from show_mark_fhandle() with s_umount lock. This form of fix was suggested by Amir in [1]. [1]: https://lore.kernel.org/all/CAOQ4uxhbDwhb+2Brs1UdkoF0a3NSdBAOQPNfEHjahrgoKJpLEw@mail.gmail.com/

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/950b604384fd75d62…
https://git.kernel.org/stable/c/bc1c6b803e14ea2b8…
https://git.kernel.org/stable/c/3f307a9f7a7a2822e…
https://git.kernel.org/stable/c/d1894bc542becb0fd…
https://git.kernel.org/stable/c/a7c4bb43bfdc2b9f0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a1a541fbfa7e97c1100144db34b57553d7164ce5 , < 950b604384fd75d62e860bec7135b2b62eb4d508 (git) Affected: f0c0ac84de17c37e6e84da65fb920f91dada55ad , < bc1c6b803e14ea2b8f7e33b7164013f666ceb656 (git) Affected: 3c7c90274ae339e1ad443c9be1c67a20b80b9c76 , < 3f307a9f7a7a2822e38ac451b73e2244e7279496 (git) Affected: c45beebfde34aa71afbc48b2c54cdda623515037 , < d1894bc542becb0fda61e7e513b09523cab44030 (git) Affected: c45beebfde34aa71afbc48b2c54cdda623515037 , < a7c4bb43bfdc2b9f06ee9d036028ed13a83df42a (git) Affected: 6.6.72 , < 6.6.73 (semver) Affected: 6.6.74 , < 6.6.115 (semver) Affected: 6.12.10 , < 6.12.56 (semver)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.6.73 , ≤ 6.6.* (semver) Unaffected: 6.6.115 , ≤ 6.6.* (semver) Unaffected: 6.12.56 , ≤ 6.12.* (semver) Unaffected: 6.17.6 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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CVE-2026-23110 (GCVE-0-2026-23110)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-07-14 12:46

Title

scsi: core: Wake up the error handler when final completions race against each other

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Wake up the error handler when final completions race against each other The fragile ordering between marking commands completed or failed so that the error handler only wakes when the last running command completes or times out has race conditions. These race conditions can cause the SCSI layer to fail to wake the error handler, leaving I/O through the SCSI host stuck as the error state cannot advance. First, there is an memory ordering issue within scsi_dec_host_busy(). The write which clears SCMD_STATE_INFLIGHT may be reordered with reads counting in scsi_host_busy(). While the local CPU will see its own write, reordering can allow other CPUs in scsi_dec_host_busy() or scsi_eh_inc_host_failed() to see a raised busy count, causing no CPU to see a host busy equal to the host_failed count. This race condition can be prevented with a memory barrier on the error path to force the write to be visible before counting host busy commands. Second, there is a general ordering issue with scsi_eh_inc_host_failed(). By counting busy commands before incrementing host_failed, it can race with a final command in scsi_dec_host_busy(), such that scsi_dec_host_busy() does not see host_failed incremented but scsi_eh_inc_host_failed() counts busy commands before SCMD_STATE_INFLIGHT is cleared by scsi_dec_host_busy(), resulting in neither waking the error handler task. This needs the call to scsi_host_busy() to be moved after host_failed is incremented to close the race condition.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/cc872e35c0df80062…
https://git.kernel.org/stable/c/6d9a367be35610196…
https://git.kernel.org/stable/c/9fdc6f28d5e81350a…
https://git.kernel.org/stable/c/64ae21b9c4f0c7e60…
https://git.kernel.org/stable/c/219f009ebfd1ef397…
https://git.kernel.org/stable/c/fe2f8ad6f0999db3b…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

5 products

Vendor	Product	Version
Linux	Linux	Affected: 6eb045e092efefafc6687409a6fa6d1dabf0fb69 , < cc872e35c0df80062abc71268d690a2f749e542e (git) Affected: 6eb045e092efefafc6687409a6fa6d1dabf0fb69 , < 6d9a367be356101963c249ebf10ea10b32886607 (git) Affected: 6eb045e092efefafc6687409a6fa6d1dabf0fb69 , < 9fdc6f28d5e81350ab1d2cac8389062bd09e61e1 (git) Affected: 6eb045e092efefafc6687409a6fa6d1dabf0fb69 , < 64ae21b9c4f0c7e60cf47a53fa7ab68852079ef0 (git) Affected: 6eb045e092efefafc6687409a6fa6d1dabf0fb69 , < 219f009ebfd1ef3970888ee9eef4c8a06357f862 (git) Affected: 6eb045e092efefafc6687409a6fa6d1dabf0fb69 , < fe2f8ad6f0999db3b318359a01ee0108c703a8c3 (git)
Linux	Linux	Affected: 5.5 Unaffected: 0 , < 5.5 (semver) Unaffected: 5.10.249 , ≤ 5.10.* (semver) Unaffected: 6.1.162 , ≤ 6.1.* (semver) Unaffected: 6.6.122 , ≤ 6.6.* (semver) Unaffected: 6.12.68 , ≤ 6.12.* (semver) Unaffected: 6.18.8 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-31692 (GCVE-0-2026-31692)

Vulnerability from cvelistv5 – Published: 2026-04-30 10:34 – Updated: 2026-05-11 22:13

Title

rtnetlink: add missing netlink_ns_capable() check for peer netns

Summary

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlink_ns_capable() check for peer netns rtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer network namespace when creating paired devices (veth, vxcan, netkit). This allows an unprivileged user with a user namespace to create interfaces in arbitrary network namespaces, including init_net. Add a netlink_ns_capable() check for CAP_NET_ADMIN in the peer namespace before allowing device creation to proceed.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/0975b64ffb3456004…
https://git.kernel.org/stable/c/d04cc16d3624218a5…
https://git.kernel.org/stable/c/7b735ef8128600779…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 81adee47dfb608df3ad0b91d230fb3cef75f0060 , < 0975b64ffb34560042090a5986c3a02e6c80f36f (git) Affected: 81adee47dfb608df3ad0b91d230fb3cef75f0060 , < d04cc16d3624218a5458b2b664ae431f1b3b334d (git) Affected: 81adee47dfb608df3ad0b91d230fb3cef75f0060 , < 7b735ef81286007794a227ce2539419479c02a5f (git)
Linux	Linux	Affected: 2.6.33 Unaffected: 0 , < 2.6.33 (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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    "dateReserved": "2026-03-09T15:48:24.131Z",
    "dateUpdated": "2026-05-11T22:13:52.952Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-46099 (GCVE-0-2026-46099)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:59 – Updated: 2026-07-27 12:05

Title

net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels

Summary

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels seg6_input_core() and rpl_input() call ip6_route_input() which sets a NOREF dst on the skb, then pass it to dst_cache_set_ip6() invoking dst_hold() unconditionally. On PREEMPT_RT, ksoftirqd is preemptible and a higher-priority task can release the underlying pcpu_rt between the lookup and the caching through a concurrent FIB lookup on a shared nexthop. Simplified race sequence: ksoftirqd/X higher-prio task (same CPU X) ----------- -------------------------------- seg6_input_core(,skb)/rpl_input(skb) dst_cache_get() -> miss ip6_route_input(skb) -> ip6_pol_route(,skb,flags) [RT6_LOOKUP_F_DST_NOREF in flags] -> FIB lookup resolves fib6_nh [nhid=N route] -> rt6_make_pcpu_route() [creates pcpu_rt, refcount=1] pcpu_rt->sernum = fib6_sernum [fib6_sernum=W] -> cmpxchg(fib6_nh.rt6i_pcpu, NULL, pcpu_rt) [slot was empty, store succeeds] -> skb_dst_set_noref(skb, dst) [dst is pcpu_rt, refcount still 1] rt_genid_bump_ipv6() -> bumps fib6_sernum [fib6_sernum from W to Z] ip6_route_output() -> ip6_pol_route() -> FIB lookup resolves fib6_nh [nhid=N] -> rt6_get_pcpu_route() pcpu_rt->sernum != fib6_sernum [W <> Z, stale] -> prev = xchg(rt6i_pcpu, NULL) -> dst_release(prev) [prev is pcpu_rt, refcount 1->0, dead] dst = skb_dst(skb) [dst is the dead pcpu_rt] dst_cache_set_ip6(dst) -> dst_hold() on dead dst -> WARN / use-after-free For the race to occur, ksoftirqd must be preemptible (PREEMPT_RT without PREEMPT_RT_NEEDS_BH_LOCK) and a concurrent task must be able to release the pcpu_rt. Shared nexthop objects provide such a path, as two routes pointing to the same nhid share the same fib6_nh and its rt6i_pcpu entry. Fix seg6_input_core() and rpl_input() by calling skb_dst_force() after ip6_route_input() to force the NOREF dst into a refcounted one before caching. The output path is not affected as ip6_route_output() already returns a refcounted dst.

Severity

8.1 (High)


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

7 (High)


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

CWE

CWE-911 - Improper Update of Reference Count

Assigner

Linux

References

11 references

URL	Tags
https://git.kernel.org/stable/c/51fef5a7c4d160839…
https://git.kernel.org/stable/c/b258b849a580285a1…
https://git.kernel.org/stable/c/6bd17925bd6866027…
https://git.kernel.org/stable/c/52f9db67f8f35f436…
https://git.kernel.org/stable/c/b778b6d095421619c…
https://git.kernel.org/stable/c/9dd5481f960e337b8…
https://git.kernel.org/stable/c/f9c52a6ba9780bd27…
https://access.redhat.com/security/cve/CVE-2026-46099	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2481972	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:45114	vendor-advisoryx_refsource_REDHAT

Impacted products

7 products

Vendor	Product	Version
Linux	Linux	Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < 51fef5a7c4d160839199e941929456ba21ddf73c (git) Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < b258b849a580285a1692e782ebc902b44c884a71 (git) Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < 6bd17925bd6866027a6555db17905b9fc073d38d (git) Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < 52f9db67f8f35f436366cf4980b4f0a2583d0ef0 (git) Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < b778b6d095421619c331fd2d7751143cd5387103 (git) Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < 9dd5481f960e337b81d7dfe429529495c1c481c0 (git) Affected: af4a2209b1344939eaac11f269c261d347cbc3ee , < f9c52a6ba9780bd27e0bf4c044fd91c13c778b6e (git)
Linux	Linux	Affected: 4.12 Unaffected: 0 , < 4.12 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:6.12.0-211.39.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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CVE-2026-52973 (GCVE-0-2026-52973)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-07-29 12:04

Title

futex: Drop CLONE_THREAD requirement for private default hash alloc

Summary

In the Linux kernel, the following vulnerability has been resolved: futex: Drop CLONE_THREAD requirement for private default hash alloc Currently need_futex_hash_allocate_default() depends on strict pthread semantics, abusing CLONE_THREAD. This breaks the non-concurrency assumptions when doing the mm->futex_ref pcpu allocations, leading to bugs[0] when sharing the mm in other ways; ie: BUG: KASAN: slab-use-after-free in futex_hash_put ... where the +1 bias can end up on a percpu counter that mm->futex_ref no longer points at. Loosen the check to cover any CLONE_VM clone, except vfork(). Excluding vfork keeps the existing paths untouched (no overhead), and we can't race in the first place: either the parent is suspended and the child runs alone, or mm->futex_ref is already allocated from an earlier CLONE_VM.

Severity

7.8 (High)


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

7 (High)


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

CWE

CWE-825 - Expired Pointer Dereference

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/1dcd36420af2da5bd…
https://git.kernel.org/stable/c/974ac49a9a068b059…
https://git.kernel.org/stable/c/ee9dce44362b2d813…
https://access.redhat.com/security/cve/CVE-2026-52973	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492413	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:45114	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47040	vendor-advisoryx_refsource_REDHAT

Impacted products

8 products

Vendor	Product	Version
Linux	Linux	Affected: d9b05321e21e4b218de4ce8a590bf375f58b6346 , < 1dcd36420af2da5bd59306dba9caf78e3d248b1d (git) Affected: d9b05321e21e4b218de4ce8a590bf375f58b6346 , < 974ac49a9a068b0591a59f65c63eb06579a13091 (git) Affected: d9b05321e21e4b218de4ce8a590bf375f58b6346 , < ee9dce44362b2d8132c32964656ab6dff7dfbc6a (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:6.12.0-211.39.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.31.1.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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JSON

To clipboard

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CVE-2026-53059 (GCVE-0-2026-53059)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-07-29 12:04

Title

dm log: fix out-of-bounds write due to region_count overflow

Summary

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to region_count overflow The local variable region_count in create_log_context() is declared as unsigned int (32-bit), but dm_sector_div_up() returns sector_t (64-bit). When a device-mapper target has a sufficiently large ti->len with a small region_size, the division result can exceed UINT_MAX. The truncated value is then used to calculate bitset_size, causing clean_bits, sync_bits, and recovering_bits to be allocated far smaller than needed for the actual number of regions. Subsequent log operations (log_set_bit, log_clear_bit, log_test_bit) use region indices derived from the full untruncated region space, causing out-of-bounds writes to kernel heap memory allocated by vmalloc. This can be reproduced by creating a mirror target whose region_count overflows 32 bits: dmsetup create bigzero --table '0 8589934594 zero' dmsetup create mymirror --table '0 8589934594 mirror \ core 2 2 nosync 2 /dev/mapper/bigzero 0 \ /dev/mapper/bigzero 0' The status output confirms the truncation (sync_count=1 instead of 4294967297, because 0x100000001 was truncated to 1): $ dmsetup status mymirror 0 8589934594 mirror 2 254:1 254:1 1/4294967297 ... This leads to a kernel crash in core_in_sync: BUG: scheduling while atomic: (udev-worker)/9150/0x00000000 RIP: 0010:core_in_sync+0x14/0x30 [dm_log] CR2: 0000000000000008 Fixing recursive fault but reboot is needed! Fix by widening the local region_count to sector_t and adding an explicit overflow check before the value is assigned to lc->region_count.

Severity

6.3 (Medium)


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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

Linux

References

16 references

URL	Tags
https://git.kernel.org/stable/c/44ab8875ae4a2842b…
https://git.kernel.org/stable/c/defe483e47173768c…
https://git.kernel.org/stable/c/3ec74da927b4e171a…
https://git.kernel.org/stable/c/d4ac87567f86a55c3…
https://git.kernel.org/stable/c/12bd5b88e91a02785…
https://git.kernel.org/stable/c/b455903eed4558982…
https://git.kernel.org/stable/c/4ec8323b9f0764a14…
https://git.kernel.org/stable/c/c20e36b7631d83e75…
https://access.redhat.com/security/cve/CVE-2026-53059	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492277	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:45114	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45192	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45115	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47248	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:45116	vendor-advisoryx_refsource_REDHAT

Impacted products

11 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 44ab8875ae4a2842bde2d756bed195d375e0debb (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < defe483e47173768c227532694dc78cb65db5f09 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3ec74da927b4e171a6fc0e77b1188ba4d019af51 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d4ac87567f86a55c3c92e9a5144dcd943a9772a1 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 12bd5b88e91a02785244ff1d20fb157e96e9cdc8 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b455903eed4558982be0811f5b7f44f6bbc4ff57 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4ec8323b9f0764a14d532b1ae9b87f8a9fecb867 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c20e36b7631d83e7535877f08af8b0af72c44b1a (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:6.12.0-211.39.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.147.1.rt7.488.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.147.1.el8_10 , < * (rpm) cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:4.18.0-305.200.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_aus:8.4
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 0:4.18.0-305.200.1.el8_4 , < * (rpm) cpe:/o:redhat:rhel_eus_long_life:8.4
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.30.1.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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JSON

To clipboard

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}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

alsa-2026:45114

Vulnerability from osv_almalinux

CVE-2025-40237 (GCVE-0-2025-40237)

CVE-2026-23110 (GCVE-0-2026-23110)

CVE-2026-31692 (GCVE-0-2026-31692)

CVE-2026-46099 (GCVE-0-2026-46099)

CVE-2026-52973 (GCVE-0-2026-52973)

CVE-2026-53059 (GCVE-0-2026-53059)

Tags

Sightings

Nomenclature