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alsa-2026:19568
Vulnerability from osv_almalinux
Published
2026-05-20 00:00
Modified
2026-06-07 18:33
Summary
Important: kernel security update
Details
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
- kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766)
- kernel: scsi: qla2xxx: Fix improper freeing of purex item (CVE-2025-68741)
- kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116)
- kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984)
- kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990)
- kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136)
- kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)
- kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation (CVE-2026-23270)
- kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401)
- kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402)
- kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532)
- kernel: usbip: validate number_of_packets in usbip_pack_ret_submit() (CVE-2026-31607)
- kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)
- kernel: RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128)
- kernel: "Dirty Frag" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284)
- kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300)
- kernel: Read root-owned files as an unprivileged user (CVE-2026-46333)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
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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: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766)\n * kernel: scsi: qla2xxx: Fix improper freeing of purex item (CVE-2025-68741)\n * kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116)\n * kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984)\n * kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990)\n * kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136)\n * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)\n * kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation (CVE-2026-23270)\n * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401)\n * kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402)\n * kernel: can: raw: fix ro-\u003euniq use-after-free in raw_rcv() (CVE-2026-31532)\n * kernel: usbip: validate number_of_packets in usbip_pack_ret_submit() (CVE-2026-31607)\n * kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)\n * kernel: RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128)\n * kernel: \"Dirty Frag\" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284)\n * kernel: \"Fragnesia\" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300)\n * kernel: Read root-owned files as an unprivileged user (CVE-2026-46333)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
"id": "ALSA-2026:19568",
"modified": "2026-06-07T18:33:25Z",
"published": "2026-05-20T00:00:00Z",
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"summary": "Important: kernel security update"
}
CVE-2025-39766 (GCVE-0-2025-39766)
Vulnerability from cvelistv5 – Published: 2025-09-11 16:56 – Updated: 2026-06-11 18:44
VLAI
EPSS
Title
net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit
The following setup can trigger a WARNING in htb_activate due to
the condition: !cl->leaf.q->q.qlen
tc qdisc del dev lo root
tc qdisc add dev lo root handle 1: htb default 1
tc class add dev lo parent 1: classid 1:1 \
htb rate 64bit
tc qdisc add dev lo parent 1:1 handle f: \
cake memlimit 1b
ping -I lo -f -c1 -s64 -W0.001 127.0.0.1
This is because the low memlimit leads to a low buffer_limit, which
causes packet dropping. However, cake_enqueue still returns
NET_XMIT_SUCCESS, causing htb_enqueue to call htb_activate with an
empty child qdisc. We should return NET_XMIT_CN when packets are
dropped from the same tin and flow.
I do not believe return value of NET_XMIT_CN is necessary for packet
drops in the case of ack filtering, as that is meant to optimize
performance, not to signal congestion.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/7689ab22de36f8db1… | |
| https://git.kernel.org/stable/c/de04ddd2980b48caa… | |
| https://git.kernel.org/stable/c/0dacfc5372e314d12… | |
| https://git.kernel.org/stable/c/710866fc0a64eafcb… | |
| https://git.kernel.org/stable/c/aa12ee1c1bd260943… | |
| https://git.kernel.org/stable/c/ff57186b2cc397666… | |
| https://git.kernel.org/stable/c/62d591dde4defb133… | |
| https://git.kernel.org/stable/c/15de71d06a400f7fd… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 7689ab22de36f8db19095f6bdf11f28cfde92f5c
(git)
Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < de04ddd2980b48caa8d7e24a7db2742917a8b280 (git) Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 0dacfc5372e314d1219f03e64dde3ab495a5a25e (git) Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 710866fc0a64eafcb8bacd91bcb1329eb7e5035f (git) Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < aa12ee1c1bd260943fd6ab556d8635811c332eeb (git) Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < ff57186b2cc39766672c4c0332323933e5faaa88 (git) Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 62d591dde4defb1333d202410609c4ddeae060b3 (git) Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 15de71d06a400f7fdc15bf377a2552b0ec437cf5 (git) |
|
| Linux | Linux |
Affected:
4.19
Unaffected: 0 , < 4.19 (semver) Unaffected: 5.4.297 , ≤ 5.4.* (semver) Unaffected: 5.10.241 , ≤ 5.10.* (semver) Unaffected: 5.15.190 , ≤ 5.15.* (semver) Unaffected: 6.1.149 , ≤ 6.1.* (semver) Unaffected: 6.6.103 , ≤ 6.6.* (semver) Unaffected: 6.12.44 , ≤ 6.12.* (semver) Unaffected: 6.16.4 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC CN 4100 |
Affected:
0 , < V5.0
(custom)
|
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CVE-2025-68741 (GCVE-0-2025-68741)
Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-06-16 19:32
VLAI
EPSS
Title
scsi: qla2xxx: Fix improper freeing of purex item
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Fix improper freeing of purex item
In qla2xxx_process_purls_iocb(), an item is allocated via
qla27xx_copy_multiple_pkt(), which internally calls
qla24xx_alloc_purex_item().
The qla24xx_alloc_purex_item() function may return a pre-allocated item
from a per-adapter pool for small allocations, instead of dynamically
allocating memory with kzalloc().
An error handling path in qla2xxx_process_purls_iocb() incorrectly uses
kfree() to release the item. If the item was from the pre-allocated
pool, calling kfree() on it is a bug that can lead to memory corruption.
Fix this by using the correct deallocation function,
qla24xx_free_purex_item(), which properly handles both dynamically
allocated and pre-allocated items.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
875386b98857822b77ac7f95bdf367b70af5b78c , < 4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9
(git)
Affected: 875386b98857822b77ac7f95bdf367b70af5b78c , < 8e9f0a0717ba31d5842721627ade1e62d7aec012 (git) Affected: 875386b98857822b77ac7f95bdf367b70af5b78c , < cfe3e2f768d248fd3d965d561d0768a56dd0b9f8 (git) Affected: 875386b98857822b77ac7f95bdf367b70af5b78c , < 5fa1c8226b4532ad7011d295d3ab4ad45df105ae (git) Affected: 875386b98857822b77ac7f95bdf367b70af5b78c , < 78b1a242fe612a755f2158fd206ee6bb577d18ca (git) |
|
| Linux | Linux |
Affected:
6.6
Unaffected: 0 , < 6.6 (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
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CVE-2025-71116 (GCVE-0-2025-71116)
Vulnerability from cvelistv5 – Published: 2026-01-14 15:06 – Updated: 2026-06-11 18:44
VLAI
EPSS
Title
libceph: make decode_pool() more resilient against corrupted osdmaps
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: make decode_pool() more resilient against corrupted osdmaps
If the osdmap is (maliciously) corrupted such that the encoded length
of ceph_pg_pool envelope is less than what is expected for a particular
encoding version, out-of-bounds reads may ensue because the only bounds
check that is there is based on that length value.
This patch adds explicit bounds checks for each field that is decoded
or skipped.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/d061be4c8040ffb11… | |
| https://git.kernel.org/stable/c/145d140abda80e333… | |
| https://git.kernel.org/stable/c/c82e39ff67353a5a6… | |
| https://git.kernel.org/stable/c/e927ab132b87ba3f0… | |
| https://git.kernel.org/stable/c/5d0d8c292531fe356… | |
| https://git.kernel.org/stable/c/2acb8517429ab4214… | |
| https://git.kernel.org/stable/c/8c738512714e8c0aa… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < d061be4c8040ffb1110d537654a038b8b6ad39d2
(git)
Affected: 4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < 145d140abda80e33331c5781d6603014fa75d258 (git) Affected: 4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < c82e39ff67353a5a6cbc07b786b8690bd2c45aaa (git) Affected: 4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < e927ab132b87ba3f076705fc2684d94b24201ed1 (git) Affected: 4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < 5d0d8c292531fe356c4e94dcfdf7d7212aca9957 (git) Affected: 4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < 2acb8517429ab42146c6c0ac1daed1f03d2fd125 (git) Affected: 4f6a7e5ee1393ec4b243b39dac9f36992d161540 , < 8c738512714e8c0aa18f8a10c072d5b01c83db39 (git) |
|
| Linux | Linux |
Affected:
3.9
Unaffected: 0 , < 3.9 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
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CVE-2026-22984 (GCVE-0-2026-22984)
Vulnerability from cvelistv5 – Published: 2026-01-23 15:24 – Updated: 2026-06-16 20:35
VLAI
EPSS
Title
libceph: prevent potential out-of-bounds reads in handle_auth_done()
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: prevent potential out-of-bounds reads in handle_auth_done()
Perform an explicit bounds check on payload_len to avoid a possible
out-of-bounds access in the callout.
[ idryomov: changelog ]
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/194cfe2af4d2a1de5… | |
| https://git.kernel.org/stable/c/79fe3511db416d2f2… | |
| https://git.kernel.org/stable/c/ef208ea331ef68872… | |
| https://git.kernel.org/stable/c/2802ef3380fa8c4a0… | |
| https://git.kernel.org/stable/c/2d653bb63d598ae4b… | |
| https://git.kernel.org/stable/c/818156caffbf55cb4… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
cd1a677cad994021b19665ed476aea63f5d54f31 , < 194cfe2af4d2a1de599d39dad636b47c2f6c2c96
(git)
Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 79fe3511db416d2f2edcfd93569807cb02736e5e (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < ef208ea331ef688729f64089b895ed1b49e842e3 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 2d653bb63d598ae4b096dd678744bdcc34ee89e8 (git) Affected: cd1a677cad994021b19665ed476aea63f5d54f31 , < 818156caffbf55cb4d368f9c3cac64e458fb49c9 (git) |
|
| Linux | Linux |
Affected:
5.11
Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.161 , ≤ 6.1.* (semver) Unaffected: 6.6.121 , ≤ 6.6.* (semver) Unaffected: 6.12.66 , ≤ 6.12.* (semver) Unaffected: 6.18.6 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
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CVE-2026-22990 (GCVE-0-2026-22990)
Vulnerability from cvelistv5 – Published: 2026-01-23 15:24 – Updated: 2026-06-16 20:38
VLAI
EPSS
Title
libceph: replace overzealous BUG_ON in osdmap_apply_incremental()
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: replace overzealous BUG_ON in osdmap_apply_incremental()
If the osdmap is (maliciously) corrupted such that the incremental
osdmap epoch is different from what is expected, there is no need to
BUG. Instead, just declare the incremental osdmap to be invalid.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/9aa0b0c14cefece07… | |
| https://git.kernel.org/stable/c/4b106fbb1c7b841cd… | |
| https://git.kernel.org/stable/c/6afd2a4213524bc74… | |
| https://git.kernel.org/stable/c/d3613770e2677683e… | |
| https://git.kernel.org/stable/c/6c6cec3db3b418c4f… | |
| https://git.kernel.org/stable/c/6348d70af847b7980… | |
| https://git.kernel.org/stable/c/e00c3f71b5cf75681… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
f24e9980eb860d8600cbe5ef3d2fd9295320d229 , < 9aa0b0c14cefece078286d78b97d4c09685e372d
(git)
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|
| Linux | Linux |
Affected:
2.6.34
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CVE-2026-23136 (GCVE-0-2026-23136)
Vulnerability from cvelistv5 – Published: 2026-02-14 15:22 – Updated: 2026-05-11 22:00
VLAI
EPSS
Title
libceph: reset sparse-read state in osd_fault()
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: reset sparse-read state in osd_fault()
When a fault occurs, the connection is abandoned, reestablished, and any
pending operations are retried. The OSD client tracks the progress of a
sparse-read reply using a separate state machine, largely independent of
the messenger's state.
If a connection is lost mid-payload or the sparse-read state machine
returns an error, the sparse-read state is not reset. The OSD client
will then interpret the beginning of a new reply as the continuation of
the old one. If this makes the sparse-read machinery enter a failure
state, it may never recover, producing loops like:
libceph: [0] got 0 extents
libceph: data len 142248331 != extent len 0
libceph: osd0 (1)...:6801 socket error on read
libceph: data len 142248331 != extent len 0
libceph: osd0 (1)...:6801 socket error on read
Therefore, reset the sparse-read state in osd_fault(), ensuring retries
start from a clean state.
Severity
7.5 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
f628d799972799023d32c2542bb2639eb8c4f84e , < 90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff
(git)
Affected: f628d799972799023d32c2542bb2639eb8c4f84e , < e94075e950a6598e710b9f7dffea5aa388f40313 (git) Affected: f628d799972799023d32c2542bb2639eb8c4f84e , < 10b7c72810364226f7b27916ea3e2a4f870bc04b (git) Affected: f628d799972799023d32c2542bb2639eb8c4f84e , < 11194b416ef95012c2cfe5f546d71af07b639e93 (git) |
|
| Linux | Linux |
Affected:
6.6
Unaffected: 0 , < 6.6 (semver) Unaffected: 6.6.121 , ≤ 6.6.* (semver) Unaffected: 6.12.66 , ≤ 6.12.* (semver) Unaffected: 6.18.6 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
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CVE-2026-23204 (GCVE-0-2026-23204)
Vulnerability from cvelistv5 – Published: 2026-02-14 16:27 – Updated: 2026-06-16 20:32
VLAI
EPSS
Title
net/sched: cls_u32: use skb_header_pointer_careful()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/sched: cls_u32: use skb_header_pointer_careful()
skb_header_pointer() does not fully validate negative @offset values.
Use skb_header_pointer_careful() instead.
GangMin Kim provided a report and a repro fooling u32_classify():
BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0
net/sched/cls_u32.c:221
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/29681ed51e737be14… | |
| https://git.kernel.org/stable/c/cfa745830e45ecb75… | |
| https://git.kernel.org/stable/c/13336a6239b9d7c6e… | |
| https://git.kernel.org/stable/c/e41a23e61259f5526… | |
| https://git.kernel.org/stable/c/8a672f177ebe19c93… | |
| https://git.kernel.org/stable/c/cabd1a976375780da… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d , < 29681ed51e737be14d18ecd1c304c57002e4b72c
(git)
Affected: fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d , < cfa745830e45ecb75c061aa34330ee0cac941cc7 (git) Affected: fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d , < 13336a6239b9d7c6e61483017bb8bdfe3ceb10a5 (git) Affected: fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d , < e41a23e61259f5526af875c3b86b3d42a9bae0e5 (git) Affected: fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d , < 8a672f177ebe19c93d795fbe967846084fbc7943 (git) Affected: fbc2e7d9cf49e0bf89b9e91fd60a06851a855c5d , < cabd1a976375780dabab888784e356f574bbaed8 (git) |
|
| Linux | Linux |
Affected:
2.6.35
Unaffected: 0 , < 2.6.35 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.124 , ≤ 6.6.* (semver) Unaffected: 6.12.70 , ≤ 6.12.* (semver) Unaffected: 6.18.10 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
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CVE-2026-23270 (GCVE-0-2026-23270)
Vulnerability from cvelistv5 – Published: 2026-03-18 17:54 – Updated: 2026-05-23 16:04
VLAI
EPSS
Title
net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks
As Paolo said earlier [1]:
"Since the blamed commit below, classify can return TC_ACT_CONSUMED while
the current skb being held by the defragmentation engine. As reported by
GangMin Kim, if such packet is that may cause a UaF when the defrag engine
later on tries to tuch again such packet."
act_ct was never meant to be used in the egress path, however some users
are attaching it to egress today [2]. Attempting to reach a middle
ground, we noticed that, while most qdiscs are not handling
TC_ACT_CONSUMED, clsact/ingress qdiscs are. With that in mind, we
address the issue by only allowing act_ct to bind to clsact/ingress
qdiscs and shared blocks. That way it's still possible to attach act_ct to
egress (albeit only with clsact).
[1] https://lore.kernel.org/netdev/674b8cbfc385c6f37fb29a1de08d8fe5c2b0fbee.1771321118.git.pabeni@redhat.com/
[2] https://lore.kernel.org/netdev/cc6bfb4a-4a2b-42d8-b9ce-7ef6644fb22b@ovn.org/
Severity
7.8 (High)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/bc4e5bb529823a09f… | |
| https://git.kernel.org/stable/c/fb3c380a54e33d1fd… | |
| https://git.kernel.org/stable/c/5a110ddcc99bda77a… | |
| https://git.kernel.org/stable/c/524ce8b4ea8f64900… | |
| https://git.kernel.org/stable/c/380ad8b7c65ea7aa1… | |
| https://git.kernel.org/stable/c/9deda0fcda5c1f388… | |
| https://git.kernel.org/stable/c/11cb63b0d1a0685e0… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
172ba7d46c202e679f3ccb10264c67416aaeb1c4 , < bc4e5bb529823a09f02dbe96169de679a9db26e0
(git)
Affected: 0b5b831122fc3789fff75be433ba3e4dd7b779d4 , < fb3c380a54e33d1fd272cc342faa906d787d7ef1 (git) Affected: 73f7da5fd124f2cda9161e2e46114915e6e82e97 , < 5a110ddcc99bda77a28598b3555fe009eaab3828 (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < 524ce8b4ea8f64900b6c52b6a28df74f6bc0801e (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < 380ad8b7c65ea7aa10ef2258297079ed5ac1f5b6 (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < 9deda0fcda5c1f388c5e279541850b71a2ccfcf4 (git) Affected: 3f14b377d01d8357eba032b4cabc8c1149b458b6 , < 11cb63b0d1a0685e0831ae3c77223e002ef18189 (git) Affected: f5346df0591d10bc948761ca854b1fae6d2ef441 (git) Affected: 5.15.148 , < 5.15.203 (semver) Affected: 6.1.75 , < 6.1.167 (semver) Affected: 6.6.14 , < 6.6.130 (semver) Affected: 6.7.2 , < 6.8 (semver) |
|
| Linux | Linux |
Affected:
6.8
Unaffected: 0 , < 6.8 (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.77 , ≤ 6.12.* (semver) Unaffected: 6.18.18 , ≤ 6.18.* (semver) Unaffected: 6.19.8 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
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"version": "172ba7d46c202e679f3ccb10264c67416aaeb1c4",
"versionType": "git"
},
{
"lessThan": "fb3c380a54e33d1fd272cc342faa906d787d7ef1",
"status": "affected",
"version": "0b5b831122fc3789fff75be433ba3e4dd7b779d4",
"versionType": "git"
},
{
"lessThan": "5a110ddcc99bda77a28598b3555fe009eaab3828",
"status": "affected",
"version": "73f7da5fd124f2cda9161e2e46114915e6e82e97",
"versionType": "git"
},
{
"lessThan": "524ce8b4ea8f64900b6c52b6a28df74f6bc0801e",
"status": "affected",
"version": "3f14b377d01d8357eba032b4cabc8c1149b458b6",
"versionType": "git"
},
{
"lessThan": "380ad8b7c65ea7aa10ef2258297079ed5ac1f5b6",
"status": "affected",
"version": "3f14b377d01d8357eba032b4cabc8c1149b458b6",
"versionType": "git"
},
{
"lessThan": "9deda0fcda5c1f388c5e279541850b71a2ccfcf4",
"status": "affected",
"version": "3f14b377d01d8357eba032b4cabc8c1149b458b6",
"versionType": "git"
},
{
"lessThan": "11cb63b0d1a0685e0831ae3c77223e002ef18189",
"status": "affected",
"version": "3f14b377d01d8357eba032b4cabc8c1149b458b6",
"versionType": "git"
},
{
"status": "affected",
"version": "f5346df0591d10bc948761ca854b1fae6d2ef441",
"versionType": "git"
},
{
"lessThan": "5.15.203",
"status": "affected",
"version": "5.15.148",
"versionType": "semver"
},
{
"lessThan": "6.1.167",
"status": "affected",
"version": "6.1.75",
"versionType": "semver"
},
{
"lessThan": "6.6.130",
"status": "affected",
"version": "6.6.14",
"versionType": "semver"
},
{
"lessThan": "6.8",
"status": "affected",
"version": "6.7.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"include/net/act_api.h",
"net/sched/act_ct.c",
"net/sched/cls_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.18",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.203",
"versionStartIncluding": "5.15.148",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "6.1.75",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
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},
{
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.18",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
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"vulnerable": true
},
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}
],
"negate": false,
"operator": "OR"
}
]
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks\n\nAs Paolo said earlier [1]:\n\n\"Since the blamed commit below, classify can return TC_ACT_CONSUMED while\nthe current skb being held by the defragmentation engine. As reported by\nGangMin Kim, if such packet is that may cause a UaF when the defrag engine\nlater on tries to tuch again such packet.\"\n\nact_ct was never meant to be used in the egress path, however some users\nare attaching it to egress today [2]. Attempting to reach a middle\nground, we noticed that, while most qdiscs are not handling\nTC_ACT_CONSUMED, clsact/ingress qdiscs are. With that in mind, we\naddress the issue by only allowing act_ct to bind to clsact/ingress\nqdiscs and shared blocks. That way it\u0027s still possible to attach act_ct to\negress (albeit only with clsact).\n\n[1] https://lore.kernel.org/netdev/674b8cbfc385c6f37fb29a1de08d8fe5c2b0fbee.1771321118.git.pabeni@redhat.com/\n[2] https://lore.kernel.org/netdev/cc6bfb4a-4a2b-42d8-b9ce-7ef6644fb22b@ovn.org/"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:04:25.027Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/bc4e5bb529823a09f02dbe96169de679a9db26e0"
},
{
"url": "https://git.kernel.org/stable/c/fb3c380a54e33d1fd272cc342faa906d787d7ef1"
},
{
"url": "https://git.kernel.org/stable/c/5a110ddcc99bda77a28598b3555fe009eaab3828"
},
{
"url": "https://git.kernel.org/stable/c/524ce8b4ea8f64900b6c52b6a28df74f6bc0801e"
},
{
"url": "https://git.kernel.org/stable/c/380ad8b7c65ea7aa10ef2258297079ed5ac1f5b6"
},
{
"url": "https://git.kernel.org/stable/c/9deda0fcda5c1f388c5e279541850b71a2ccfcf4"
},
{
"url": "https://git.kernel.org/stable/c/11cb63b0d1a0685e0831ae3c77223e002ef18189"
}
],
"title": "net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23270",
"datePublished": "2026-03-18T17:54:43.803Z",
"dateReserved": "2026-01-13T15:37:45.991Z",
"dateUpdated": "2026-05-23T16:04:25.027Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-23401 (GCVE-0-2026-23401)
Vulnerability from cvelistv5 – Published: 2026-04-01 08:36 – Updated: 2026-06-30 12:06
VLAI
EPSS
Title
KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE
When installing an emulated MMIO SPTE, do so *after* dropping/zapping the
existing SPTE (if it's shadow-present). While commit a54aa15c6bda3 was
right about it being impossible to convert a shadow-present SPTE to an
MMIO SPTE due to a _guest_ write, it failed to account for writes to guest
memory that are outside the scope of KVM.
E.g. if host userspace modifies a shadowed gPTE to switch from a memslot
to emulted MMIO and then the guest hits a relevant page fault, KVM will
install the MMIO SPTE without first zapping the shadow-present SPTE.
------------[ cut here ]------------
is_shadow_present_pte(*sptep)
WARNING: arch/x86/kvm/mmu/mmu.c:484 at mark_mmio_spte+0xb2/0xc0 [kvm], CPU#0: vmx_ept_stale_r/4292
Modules linked in: kvm_intel kvm irqbypass
CPU: 0 UID: 1000 PID: 4292 Comm: vmx_ept_stale_r Not tainted 7.0.0-rc2-eafebd2d2ab0-sink-vm #319 PREEMPT
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
RIP: 0010:mark_mmio_spte+0xb2/0xc0 [kvm]
Call Trace:
<TASK>
mmu_set_spte+0x237/0x440 [kvm]
ept_page_fault+0x535/0x7f0 [kvm]
kvm_mmu_do_page_fault+0xee/0x1f0 [kvm]
kvm_mmu_page_fault+0x8d/0x620 [kvm]
vmx_handle_exit+0x18c/0x5a0 [kvm_intel]
kvm_arch_vcpu_ioctl_run+0xc55/0x1c20 [kvm]
kvm_vcpu_ioctl+0x2d5/0x980 [kvm]
__x64_sys_ioctl+0x8a/0xd0
do_syscall_64+0xb5/0x730
entry_SYSCALL_64_after_hwframe+0x4b/0x53
RIP: 0033:0x47fa3f
</TASK>
---[ end trace 0000000000000000 ]---
Severity
8.1 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
23 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/20656cd1f243d3a15… | |
| https://git.kernel.org/stable/c/ed5909992f344a7d3… | |
| https://git.kernel.org/stable/c/fd28c5618699180cd… | |
| https://git.kernel.org/stable/c/459158151a158a670… | |
| https://git.kernel.org/stable/c/695320de6eadb75aa… | |
| https://git.kernel.org/stable/c/bce7fe59d43531623… | |
| https://git.kernel.org/stable/c/aad885e774966e97b… | |
| https://access.redhat.com/security/cve/CVE-2026-23401 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2453803 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:15883 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19569 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13936 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:20593 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13932 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14339 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19568 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13577 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14230 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19521 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13578 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14137 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19875 | vendor-advisoryx_refsource_REDHAT |
Impacted products
47 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < 20656cd1f243d3a154aac5dd1b823110b6906fe1
(git)
Affected: a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < ed5909992f344a7d3f4024261e9f751d9618a27d (git) Affected: a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < fd28c5618699180cd69619801e9ae6a5266c0a22 (git) Affected: a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < 459158151a158a6703b49f3c9de0e536d8bd553f (git) Affected: a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < 695320de6eadb75aaed8be1787c4ce4c189e4c7b (git) Affected: a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < bce7fe59d43531623f3e43779127bfb33804925d (git) Affected: a54aa15c6bda3ca7e2f9e040ba968a1da303e24f , < aad885e774966e97b675dfe928da164214a71605 (git) |
|
| Linux | Linux |
Affected:
5.13
Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 6.6.* (semver) Unaffected: 6.12.80 , ≤ 6.12.* (semver) Unaffected: 6.18.21 , ≤ 6.18.* (semver) Unaffected: 6.19.11 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS AUS (v.8.6) |
cpe:/o:redhat:rhel_aus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.8.6) |
cpe:/o:redhat:rhel_e4s:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS TUS (v.8.6) |
cpe:/o:redhat:rhel_tus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.8.8) |
cpe:/o:redhat:rhel_e4s:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS TUS (v.8.8) |
cpe:/o:redhat:rhel_tus:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.0) |
cpe:/o:redhat:rhel_e4s:9.0::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.2) |
cpe:/o:redhat:rhel_e4s:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v.9.4) |
cpe:/o:redhat:rhel_eus:9.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v.9.6) |
cpe:/o:redhat:rhel_eus:9.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 9) |
cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat CodeReady Linux Builder EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::crb |
|
| Red Hat | Red Hat CodeReady Linux Builder EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux NFV (v. 8) |
cpe:/a:redhat:enterprise_linux:8::nfv |
|
| Red Hat | Red Hat Enterprise Linux NFV E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 9) |
cpe:/a:redhat:enterprise_linux:9::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 10) |
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux RT (v. 8) |
cpe:/a:redhat:enterprise_linux:8::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 9) |
cpe:/a:redhat:enterprise_linux:9::realtime |
|
| Red Hat | Red Hat 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 |
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:/o:redhat:enterprise_linux_eus:10.0"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream (v. 10)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.0::appstream"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream E4S (v.9.0)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.2::appstream"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream E4S (v.9.2)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhel_eus:9.4::appstream"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream EUS (v.9.4)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhel_eus:9.6::appstream"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream (v. 9)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux_eus:10.0"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS EUS (v. 10.0)",
"vendor": "Red Hat"
},
{
"cpes": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE\n\nWhen installing an emulated MMIO SPTE, do so *after* dropping/zapping the\nexisting SPTE (if it\u0027s shadow-present). While commit a54aa15c6bda3 was\nright about it being impossible to convert a shadow-present SPTE to an\nMMIO SPTE due to a _guest_ write, it failed to account for writes to guest\nmemory that are outside the scope of KVM.\n\nE.g. if host userspace modifies a shadowed gPTE to switch from a memslot\nto emulted MMIO and then the guest hits a relevant page fault, KVM will\ninstall the MMIO SPTE without first zapping the shadow-present SPTE.\n\n ------------[ cut here ]------------\n is_shadow_present_pte(*sptep)\n WARNING: arch/x86/kvm/mmu/mmu.c:484 at mark_mmio_spte+0xb2/0xc0 [kvm], CPU#0: vmx_ept_stale_r/4292\n Modules linked in: kvm_intel kvm irqbypass\n CPU: 0 UID: 1000 PID: 4292 Comm: vmx_ept_stale_r Not tainted 7.0.0-rc2-eafebd2d2ab0-sink-vm #319 PREEMPT\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n RIP: 0010:mark_mmio_spte+0xb2/0xc0 [kvm]\n Call Trace:\n \u003cTASK\u003e\n mmu_set_spte+0x237/0x440 [kvm]\n ept_page_fault+0x535/0x7f0 [kvm]\n kvm_mmu_do_page_fault+0xee/0x1f0 [kvm]\n kvm_mmu_page_fault+0x8d/0x620 [kvm]\n vmx_handle_exit+0x18c/0x5a0 [kvm_intel]\n kvm_arch_vcpu_ioctl_run+0xc55/0x1c20 [kvm]\n kvm_vcpu_ioctl+0x2d5/0x980 [kvm]\n __x64_sys_ioctl+0x8a/0xd0\n do_syscall_64+0xb5/0x730\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n RIP: 0033:0x47fa3f\n \u003c/TASK\u003e\n ---[ end trace 0000000000000000 ]---"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T22:06:11.775Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/20656cd1f243d3a154aac5dd1b823110b6906fe1"
},
{
"url": "https://git.kernel.org/stable/c/ed5909992f344a7d3f4024261e9f751d9618a27d"
},
{
"url": "https://git.kernel.org/stable/c/fd28c5618699180cd69619801e9ae6a5266c0a22"
},
{
"url": "https://git.kernel.org/stable/c/459158151a158a6703b49f3c9de0e536d8bd553f"
},
{
"url": "https://git.kernel.org/stable/c/695320de6eadb75aaed8be1787c4ce4c189e4c7b"
},
{
"url": "https://git.kernel.org/stable/c/bce7fe59d43531623f3e43779127bfb33804925d"
},
{
"url": "https://git.kernel.org/stable/c/aad885e774966e97b675dfe928da164214a71605"
}
],
"title": "KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23401",
"datePublished": "2026-04-01T08:36:32.367Z",
"dateReserved": "2026-01-13T15:37:46.012Z",
"dateUpdated": "2026-06-30T12:06:45.035Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31402 (GCVE-0-2026-31402)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-06-30 12:07
VLAI
EPSS
Title
nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
The NFSv4.0 replay cache uses a fixed 112-byte inline buffer
(rp_ibuf[NFSD4_REPLAY_ISIZE]) to store encoded operation responses.
This size was calculated based on OPEN responses and does not account
for LOCK denied responses, which include the conflicting lock owner as
a variable-length field up to 1024 bytes (NFS4_OPAQUE_LIMIT).
When a LOCK operation is denied due to a conflict with an existing lock
that has a large owner, nfsd4_encode_operation() copies the full encoded
response into the undersized replay buffer via read_bytes_from_xdr_buf()
with no bounds check. This results in a slab-out-of-bounds write of up
to 944 bytes past the end of the buffer, corrupting adjacent heap memory.
This can be triggered remotely by an unauthenticated attacker with two
cooperating NFSv4.0 clients: one sets a lock with a large owner string,
then the other requests a conflicting lock to provoke the denial.
We could fix this by increasing NFSD4_REPLAY_ISIZE to allow for a full
opaque, but that would increase the size of every stateowner, when most
lockowners are not that large.
Instead, fix this by checking the encoded response length against
NFSD4_REPLAY_ISIZE before copying into the replay buffer. If the
response is too large, set rp_buflen to 0 to skip caching the replay
payload. The status is still cached, and the client already received the
correct response on the original request.
Severity
9.8 (Critical)
7.8 (High)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
30 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/f9fcb4441f6c02bb2… | |
| https://git.kernel.org/stable/c/2665887a69437a8a4… | |
| https://git.kernel.org/stable/c/c9452c0797c95cf23… | |
| https://git.kernel.org/stable/c/8afb437ea1f70cacb… | |
| https://git.kernel.org/stable/c/dad0c3c0a8e5d1d6e… | |
| https://git.kernel.org/stable/c/0f0e2a54a31a7f9ad… | |
| https://git.kernel.org/stable/c/ae8498337dfdfda71… | |
| https://git.kernel.org/stable/c/5133b61aaf437e5f2… | |
| https://access.redhat.com/security/cve/CVE-2026-31402 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2454844 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:14823 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14925 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14869 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:15883 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13566 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19569 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13936 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13734 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:10108 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:11313 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13565 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:19568 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13577 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14165 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13664 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13681 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13578 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14137 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14301 | vendor-advisoryx_refsource_REDHAT |
Impacted products
52 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f9fcb4441f6c02bb20c2eb340101e27dfe23607c
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2665887a69437a8a4f552f69509eecfb73d4aa19 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c9452c0797c95cf2378170df96cf4f4b3bca7eff (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8afb437ea1f70cacb4bbdf11771fb5c4d720b965 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dad0c3c0a8e5d1d6eb0fc455694ce3e25e6c57d0 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0f0e2a54a31a7f9ad2915db99156114872317388 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ae8498337dfdfda71bdd0b807c9a23a126011d76 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5133b61aaf437e5f25b1b396b14242a6bb0508e2 (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.20 , ≤ 6.18.* (semver) Unaffected: 6.19.10 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
|
| Red Hat | Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION) |
cpe:/o:redhat:rhel_els:6 |
|
| Red Hat | Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION) |
cpe:/o:redhat:rhel_els:6 |
|
| Red Hat | Red Hat Enterprise Linux Server (v. 7 ELS) |
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux for Real Time (v. 7 ELS) |
cpe:/a:redhat:rhel_extras_rt_els:7 |
|
| Red Hat | Red Hat Enterprise Linux Server Optional (v. 7 ELS) |
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS AUS (v.8.4) |
cpe:/o:redhat:rhel_aus:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) |
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS AUS (v.8.6) |
cpe:/o:redhat:rhel_aus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.8.6) |
cpe:/o:redhat:rhel_e4s:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS TUS (v.8.6) |
cpe:/o:redhat:rhel_tus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.8.8) |
cpe:/o:redhat:rhel_e4s:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS TUS (v.8.8) |
cpe:/o:redhat:rhel_tus:8.8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.0) |
cpe:/o:redhat:rhel_e4s:9.0::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.2) |
cpe:/o:redhat:rhel_e4s:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v.9.4) |
cpe:/o:redhat:rhel_eus:9.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS (v.9.6) |
cpe:/o:redhat:rhel_eus:9.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 9) |
cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat CodeReady Linux Builder EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::crb |
|
| Red Hat | Red Hat CodeReady Linux Builder EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux NFV (v. 8) |
cpe:/a:redhat:enterprise_linux:8::nfv |
|
| Red Hat | Red Hat Enterprise Linux NFV E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 9) |
cpe:/a:redhat:enterprise_linux:9::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v. 10.0) |
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 10) |
cpe:/o:redhat:enterprise_linux:10.1 cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux RT (v. 8) |
cpe:/a:redhat:enterprise_linux:8::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.0) |
cpe:/a:redhat:rhel_e4s:9.0::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.2) |
cpe:/a:redhat:rhel_e4s:9.2::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v.9.4) |
cpe:/a:redhat:rhel_eus:9.4::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time EUS (v.9.6) |
cpe:/a:redhat:rhel_eus:9.6::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 9) |
cpe:/a:redhat:enterprise_linux:9::realtime |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:/o:redhat:rhel_els:6"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_els:6"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_els:7"
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux Server (v. 7 ELS)",
"vendor": "Red Hat"
},
{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux for Real Time (v. 7 ELS)",
"vendor": "Red Hat"
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{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux Server Optional (v. 7 ELS)",
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{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
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{
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream (v. 10)",
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{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream E4S (v.9.0)",
"vendor": "Red Hat"
},
{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream E4S (v.9.2)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream EUS (v.9.4)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux AppStream (v. 9)",
"vendor": "Red Hat"
},
{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS EUS (v. 10.0)",
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},
{
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS (v. 10)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:8::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS (v. 8)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS AUS (v.8.4)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_aus:8.6::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS AUS (v.8.6)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_e4s:8.6::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS E4S (v.8.6)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_tus:8.6::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS TUS (v.8.6)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_e4s:8.8::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS E4S (v.8.8)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS TUS (v.8.8)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS E4S (v.9.0)",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS E4S (v.9.2)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_eus:9.4::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS EUS (v.9.4)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:rhel_eus:9.6::baseos"
],
"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux BaseOS EUS (v.9.6)",
"vendor": "Red Hat"
},
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}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T11:57:38.623Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/f9fcb4441f6c02bb20c2eb340101e27dfe23607c"
},
{
"url": "https://git.kernel.org/stable/c/2665887a69437a8a4f552f69509eecfb73d4aa19"
},
{
"url": "https://git.kernel.org/stable/c/c9452c0797c95cf2378170df96cf4f4b3bca7eff"
},
{
"url": "https://git.kernel.org/stable/c/8afb437ea1f70cacb4bbdf11771fb5c4d720b965"
},
{
"url": "https://git.kernel.org/stable/c/dad0c3c0a8e5d1d6eb0fc455694ce3e25e6c57d0"
},
{
"url": "https://git.kernel.org/stable/c/0f0e2a54a31a7f9ad2915db99156114872317388"
},
{
"url": "https://git.kernel.org/stable/c/ae8498337dfdfda71bdd0b807c9a23a126011d76"
},
{
"url": "https://git.kernel.org/stable/c/5133b61aaf437e5f25b1b396b14242a6bb0508e2"
}
],
"title": "nfsd: fix heap overflow in NFSv4.0 LOCK replay cache",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31402",
"datePublished": "2026-04-03T15:16:05.724Z",
"dateReserved": "2026-03-09T15:48:24.086Z",
"dateUpdated": "2026-06-30T12:07:51.037Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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