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CERTFR-2026-AVI-0398
Vulnerability from certfr_avis - Published: 2026-04-03 - Updated: 2026-04-03
De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| SUSE | N/A | SUSE Linux Enterprise Micro 5.3 | ||
| SUSE | N/A | SUSE Linux Enterprise Real Time 15 SP7 | ||
| SUSE | N/A | SUSE Linux Enterprise Micro for Rancher 5.4 | ||
| SUSE | N/A | SUSE Linux Enterprise Micro For Rancher 5.3 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 11 SP4 | ||
| SUSE | N/A | SUSE Linux Enterprise Server for SAP Applications 15 SP7 | ||
| SUSE | N/A | SUSE Linux Enterprise Live Patching 15-SP6 | ||
| SUSE | N/A | SUSE Linux Micro 6.2 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 15 SP7 | ||
| SUSE | N/A | SUSE Linux Enterprise Live Patching 15-SP7 | ||
| SUSE | N/A | SUSE Linux Enterprise Real Time 15 SP6 | ||
| SUSE | N/A | openSUSE Leap 15.6 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | ||
| SUSE | N/A | SUSE Linux ENterprise Server for SAP Applications 15 SP6 | ||
| SUSE | N/A | SUSE Linux Enterprise Micro 5.4 | ||
| SUSE | N/A | SUSE Linux Enterprise Server - bCI 16.0 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 15 SP6 |
References
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "SUSE Linux Enterprise Micro 5.3",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Real Time 15 SP7",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Micro for Rancher 5.4",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Micro For Rancher 5.3",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 11 SP4",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server for SAP Applications 15 SP7",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Live Patching 15-SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Micro 6.2",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 15 SP7",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Live Patching 15-SP7",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Real Time 15 SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "openSUSE Leap 15.6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux ENterprise Server for SAP Applications 15 SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Micro 5.4",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server - bCI 16.0",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 15 SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2023-53407",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53407"
},
{
"name": "CVE-2026-23054",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23054"
},
{
"name": "CVE-2026-23269",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23269"
},
{
"name": "CVE-2026-23004",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23004"
},
{
"name": "CVE-2025-21738",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21738"
},
{
"name": "CVE-2025-40139",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40139"
},
{
"name": "CVE-2025-38563",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38563"
},
{
"name": "CVE-2025-21658",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21658"
},
{
"name": "CVE-2024-54031",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-54031"
},
{
"name": "CVE-2025-68813",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68813"
},
{
"name": "CVE-2025-71085",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71085"
},
{
"name": "CVE-2026-23268",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23268"
},
{
"name": "CVE-2023-52923",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52923"
},
{
"name": "CVE-2025-38565",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38565"
},
{
"name": "CVE-2024-26581",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-26581"
},
{
"name": "CVE-2023-52433",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52433"
},
{
"name": "CVE-2025-38159",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38159"
},
{
"name": "CVE-2026-23209",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23209"
},
{
"name": "CVE-2025-40242",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40242"
},
{
"name": "CVE-2025-21764",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21764"
},
{
"name": "CVE-2025-21766",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21766"
},
{
"name": "CVE-2026-23204",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23204"
},
{
"name": "CVE-2023-53418",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53418"
},
{
"name": "CVE-2026-23191",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23191"
},
{
"name": "CVE-2026-23074",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23074"
},
{
"name": "CVE-2025-21760",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21760"
},
{
"name": "CVE-2024-26832",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-26832"
},
{
"name": "CVE-2025-68312",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68312"
},
{
"name": "CVE-2025-68284",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68284"
},
{
"name": "CVE-2026-22999",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-22999"
},
{
"name": "CVE-2026-23089",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23089"
},
{
"name": "CVE-2024-46854",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-46854"
},
{
"name": "CVE-2023-53178",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53178"
},
{
"name": "CVE-2024-50143",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-50143"
},
{
"name": "CVE-2022-49980",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-49980"
},
{
"name": "CVE-2026-23001",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23001"
},
{
"name": "CVE-2025-40214",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40214"
},
{
"name": "CVE-2022-49943",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-49943"
},
{
"name": "CVE-2025-71066",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71066"
},
{
"name": "CVE-2023-53417",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53417"
},
{
"name": "CVE-2025-40044",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40044"
},
{
"name": "CVE-2025-38488",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38488"
},
{
"name": "CVE-2022-49604",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-49604"
},
{
"name": "CVE-2023-53412",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53412"
},
{
"name": "CVE-2025-71112",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-71112"
},
{
"name": "CVE-2025-40284",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40284"
},
{
"name": "CVE-2025-21765",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21765"
},
{
"name": "CVE-2025-38684",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38684"
},
{
"name": "CVE-2025-40297",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40297"
},
{
"name": "CVE-2026-23060",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23060"
},
{
"name": "CVE-2022-50232",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-50232"
},
{
"name": "CVE-2025-40258",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-40258"
},
{
"name": "CVE-2025-68285",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68285"
},
{
"name": "CVE-2021-47110",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-47110"
}
],
"initial_release_date": "2026-04-03T00:00:00",
"last_revision_date": "2026-04-03T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0398",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-03T00:00:00.000000"
}
],
"risks": [
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "D\u00e9ni de service"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux de SUSE. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es, une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de SUSE",
"vendor_advisories": [
{
"published_at": "2026-03-25",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:20947-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-202620947-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1136-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261136-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1132-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261132-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1096-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261096-1"
},
{
"published_at": "2026-03-25",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:20842-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-202620842-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1102-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261102-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1099-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261099-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1125-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261125-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1130-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261130-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1131-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261131-1"
},
{
"published_at": "2026-03-26",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1100-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261100-1"
},
{
"published_at": "2026-03-25",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:20840-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-202620840-1"
},
{
"published_at": "2026-03-27",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:1101-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-20261101-1"
},
{
"published_at": "2026-03-25",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2026:20841-1",
"url": "https://www.suse.com/support/update/announcement/2026/suse-su-202620841-1"
}
]
}
CVE-2025-40214 (GCVE-0-2025-40214)
Vulnerability from cvelistv5 – Published: 2025-12-04 12:38 – Updated: 2026-05-23 16:01
VLAI?
EPSS
Title
af_unix: Initialise scc_index in unix_add_edge().
Summary
In the Linux kernel, the following vulnerability has been resolved:
af_unix: Initialise scc_index in unix_add_edge().
Quang Le reported that the AF_UNIX GC could garbage-collect a
receive queue of an alive in-flight socket, with a nice repro.
The repro consists of three stages.
1)
1-a. Create a single cyclic reference with many sockets
1-b. close() all sockets
1-c. Trigger GC
2)
2-a. Pass sk-A to an embryo sk-B
2-b. Pass sk-X to sk-X
2-c. Trigger GC
3)
3-a. accept() the embryo sk-B
3-b. Pass sk-B to sk-C
3-c. close() the in-flight sk-A
3-d. Trigger GC
As of 2-c, sk-A and sk-X are linked to unix_unvisited_vertices,
and unix_walk_scc() groups them into two different SCCs:
unix_sk(sk-A)->vertex->scc_index = 2 (UNIX_VERTEX_INDEX_START)
unix_sk(sk-X)->vertex->scc_index = 3
Once GC completes, unix_graph_grouped is set to true.
Also, unix_graph_maybe_cyclic is set to true due to sk-X's
cyclic self-reference, which makes close() trigger GC.
At 3-b, unix_add_edge() allocates unix_sk(sk-B)->vertex and
links it to unix_unvisited_vertices.
unix_update_graph() is called at 3-a. and 3-b., but neither
unix_graph_grouped nor unix_graph_maybe_cyclic is changed
because both sk-B's listener and sk-C are not in-flight.
3-c decrements sk-A's file refcnt to 1.
Since unix_graph_grouped is true at 3-d, unix_walk_scc_fast()
is finally called and iterates 3 sockets sk-A, sk-B, and sk-X:
sk-A -> sk-B (-> sk-C)
sk-X -> sk-X
This is totally fine. All of them are not yet close()d and
should be grouped into different SCCs.
However, unix_vertex_dead() misjudges that sk-A and sk-B are
in the same SCC and sk-A is dead.
unix_sk(sk-A)->scc_index == unix_sk(sk-B)->scc_index <-- Wrong!
&&
sk-A's file refcnt == unix_sk(sk-A)->vertex->out_degree
^-- 1 in-flight count for sk-B
-> sk-A is dead !?
The problem is that unix_add_edge() does not initialise scc_index.
Stage 1) is used for heap spraying, making a newly allocated
vertex have vertex->scc_index == 2 (UNIX_VERTEX_INDEX_START)
set by unix_walk_scc() at 1-c.
Let's track the max SCC index from the previous unix_walk_scc()
call and assign the max + 1 to a new vertex's scc_index.
This way, we can continue to avoid Tarjan's algorithm while
preventing misjudgments.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
adfb68b39b39767d6bfb53e48c4f19c183765686 , < 20003fbb9174121b27bd1da6ebe61542ac4c327d
(git)
Affected: d23802221f6755e104606864067c71af8cdb6788 , < 4cd8d755c7d4f515dd9abf483316aca2f1b7b0f3 (git) Affected: ad081928a8b0f57f269df999a28087fce6f2b6ce , < db81ad20fd8aef7cc7d536c52ee5ea4c1f979128 (git) Affected: ad081928a8b0f57f269df999a28087fce6f2b6ce , < 1aa7e40ee850c9053e769957ce6541173891204d (git) Affected: ad081928a8b0f57f269df999a28087fce6f2b6ce , < 60e6489f8e3b086bd1130ad4450a2c112e863791 (git) Affected: 6.1.141 , < 6.1.159 (semver) Affected: 6.6.93 , < 6.6.117 (semver) |
|
| Linux | Linux |
Affected:
6.10
Unaffected: 0 , < 6.10 (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.59 , ≤ 6.12.* (semver) Unaffected: 6.17.9 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/unix/garbage.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "20003fbb9174121b27bd1da6ebe61542ac4c327d",
"status": "affected",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Initialise scc_index in unix_add_edge().\n\nQuang Le reported that the AF_UNIX GC could garbage-collect a\nreceive queue of an alive in-flight socket, with a nice repro.\n\nThe repro consists of three stages.\n\n 1)\n 1-a. Create a single cyclic reference with many sockets\n 1-b. close() all sockets\n 1-c. Trigger GC\n\n 2)\n 2-a. Pass sk-A to an embryo sk-B\n 2-b. Pass sk-X to sk-X\n 2-c. Trigger GC\n\n 3)\n 3-a. accept() the embryo sk-B\n 3-b. Pass sk-B to sk-C\n 3-c. close() the in-flight sk-A\n 3-d. Trigger GC\n\nAs of 2-c, sk-A and sk-X are linked to unix_unvisited_vertices,\nand unix_walk_scc() groups them into two different SCCs:\n\n unix_sk(sk-A)-\u003evertex-\u003escc_index = 2 (UNIX_VERTEX_INDEX_START)\n unix_sk(sk-X)-\u003evertex-\u003escc_index = 3\n\nOnce GC completes, unix_graph_grouped is set to true.\nAlso, unix_graph_maybe_cyclic is set to true due to sk-X\u0027s\ncyclic self-reference, which makes close() trigger GC.\n\nAt 3-b, unix_add_edge() allocates unix_sk(sk-B)-\u003evertex and\nlinks it to unix_unvisited_vertices.\n\nunix_update_graph() is called at 3-a. and 3-b., but neither\nunix_graph_grouped nor unix_graph_maybe_cyclic is changed\nbecause both sk-B\u0027s listener and sk-C are not in-flight.\n\n3-c decrements sk-A\u0027s file refcnt to 1.\n\nSince unix_graph_grouped is true at 3-d, unix_walk_scc_fast()\nis finally called and iterates 3 sockets sk-A, sk-B, and sk-X:\n\n sk-A -\u003e sk-B (-\u003e sk-C)\n sk-X -\u003e sk-X\n\nThis is totally fine. All of them are not yet close()d and\nshould be grouped into different SCCs.\n\nHowever, unix_vertex_dead() misjudges that sk-A and sk-B are\nin the same SCC and sk-A is dead.\n\n unix_sk(sk-A)-\u003escc_index == unix_sk(sk-B)-\u003escc_index \u003c-- Wrong!\n \u0026\u0026\n sk-A\u0027s file refcnt == unix_sk(sk-A)-\u003evertex-\u003eout_degree\n ^-- 1 in-flight count for sk-B\n -\u003e sk-A is dead !?\n\nThe problem is that unix_add_edge() does not initialise scc_index.\n\nStage 1) is used for heap spraying, making a newly allocated\nvertex have vertex-\u003escc_index == 2 (UNIX_VERTEX_INDEX_START)\nset by unix_walk_scc() at 1-c.\n\nLet\u0027s track the max SCC index from the previous unix_walk_scc()\ncall and assign the max + 1 to a new vertex\u0027s scc_index.\n\nThis way, we can continue to avoid Tarjan\u0027s algorithm while\npreventing misjudgments."
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CVE-2025-40242 (GCVE-0-2025-40242)
Vulnerability from cvelistv5 – Published: 2025-12-04 15:31 – Updated: 2026-05-23 16:01
VLAI?
EPSS
Title
gfs2: Fix unlikely race in gdlm_put_lock
Summary
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix unlikely race in gdlm_put_lock
In gdlm_put_lock(), there is a small window of time in which the
DFL_UNMOUNT flag has been set but the lockspace hasn't been released,
yet. In that window, dlm may still call gdlm_ast() and gdlm_bast().
To prevent it from dereferencing freed glock objects, only free the
glock if the lockspace has actually been released.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
d1340f80f0b8066321b499a376780da00560e857 , < 5fdc1474e678eea1700aa266c0b7c2c96f81dd0d
(git)
Affected: d1340f80f0b8066321b499a376780da00560e857 , < 4913592a3358f6ec366b8346b733d5e2360b08e1 (git) Affected: d1340f80f0b8066321b499a376780da00560e857 , < 279bde3bbb0ac0bad5c729dfa85983d75a5d7641 (git) Affected: d1340f80f0b8066321b499a376780da00560e857 , < 64c61b4ac645222fa7b724cef616c1f862a72a40 (git) Affected: d1340f80f0b8066321b499a376780da00560e857 , < 28c4d9bc0708956c1a736a9e49fee71b65deee81 (git) Affected: 6aa628c45875e7b8cca81ed9447a12a0e8f3504a (git) Affected: a97e75203733be0a4263a78fb7b29352be150c1c (git) Affected: 3554b46204e67333e1fb8be0e93936fb08267c80 (git) Affected: 5cff77b9827a956d076168b56775aad23bce87e4 (git) Affected: 8deedce385d220f90e435f534d71d27526273515 (git) Affected: 2225a5cd2fbc2ef0e0f78e585db3844f60416a39 (git) Affected: 02e838963fdaa6ce8570b5389aecdc6cf1fb40b0 (git) Affected: 01eb3106f43335fdc02111358dae80a5c3fd324d (git) Affected: 4.4.284 , < 4.5 (semver) Affected: 4.9.283 , < 4.10 (semver) Affected: 4.14.247 , < 4.15 (semver) Affected: 4.19.207 , < 4.20 (semver) Affected: 5.4.148 , < 5.5 (semver) Affected: 5.10.67 , < 5.11 (semver) Affected: 5.13.19 , < 5.14 (semver) Affected: 5.14.6 , < 5.15 (semver) |
|
| Linux | Linux |
Affected:
5.15
Unaffected: 0 , < 5.15 (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 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-2025-40258 (GCVE-0-2025-40258)
Vulnerability from cvelistv5 – Published: 2025-12-04 16:08 – Updated: 2026-05-11 21:45
VLAI?
EPSS
Title
mptcp: fix race condition in mptcp_schedule_work()
Summary
In the Linux kernel, the following vulnerability has been resolved:
mptcp: fix race condition in mptcp_schedule_work()
syzbot reported use-after-free in mptcp_schedule_work() [1]
Issue here is that mptcp_schedule_work() schedules a work,
then gets a refcount on sk->sk_refcnt if the work was scheduled.
This refcount will be released by mptcp_worker().
[A] if (schedule_work(...)) {
[B] sock_hold(sk);
return true;
}
Problem is that mptcp_worker() can run immediately and complete before [B]
We need instead :
sock_hold(sk);
if (schedule_work(...))
return true;
sock_put(sk);
[1]
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 1 PID: 29 at lib/refcount.c:25 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:25
Call Trace:
<TASK>
__refcount_add include/linux/refcount.h:-1 [inline]
__refcount_inc include/linux/refcount.h:366 [inline]
refcount_inc include/linux/refcount.h:383 [inline]
sock_hold include/net/sock.h:816 [inline]
mptcp_schedule_work+0x164/0x1a0 net/mptcp/protocol.c:943
mptcp_tout_timer+0x21/0xa0 net/mptcp/protocol.c:2316
call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
expire_timers kernel/time/timer.c:1798 [inline]
__run_timers kernel/time/timer.c:2372 [inline]
__run_timer_base+0x648/0x970 kernel/time/timer.c:2384
run_timer_base kernel/time/timer.c:2393 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
handle_softirqs+0x22f/0x710 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
run_ktimerd+0xcf/0x190 kernel/softirq.c:1138
smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Severity ?
No CVSS data available.
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/f865e6595acf33083… | |
| https://git.kernel.org/stable/c/99908e2d601236842… | |
| https://git.kernel.org/stable/c/db4f7968a75250ca6… | |
| https://git.kernel.org/stable/c/8f9ba1a99a89feef9… | |
| https://git.kernel.org/stable/c/ac28dfddedf6f2091… | |
| https://git.kernel.org/stable/c/3fc7723ed01d1130d… | |
| https://git.kernel.org/stable/c/035bca3f017ee9dea… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
3b1d6210a9577369103330b0d802b0bf74b65e7f , < f865e6595acf33083168db76921e66ace8bf0e5b
(git)
Affected: 3b1d6210a9577369103330b0d802b0bf74b65e7f , < 99908e2d601236842d705d5fd04fb349577316f5 (git) Affected: 3b1d6210a9577369103330b0d802b0bf74b65e7f , < db4f7968a75250ca6c4ed70d0a78beabb2dcee18 (git) Affected: 3b1d6210a9577369103330b0d802b0bf74b65e7f , < 8f9ba1a99a89feef9b5867c15a0141a97e893309 (git) Affected: 3b1d6210a9577369103330b0d802b0bf74b65e7f , < ac28dfddedf6f209190950fc71bcff65ec4ab47b (git) Affected: 3b1d6210a9577369103330b0d802b0bf74b65e7f , < 3fc7723ed01d1130d4bf7063c50e0af60ecccbb4 (git) Affected: 3b1d6210a9577369103330b0d802b0bf74b65e7f , < 035bca3f017ee9dea3a5a756e77a6f7138cc6eea (git) |
|
| Linux | Linux |
Affected:
5.7
Unaffected: 0 , < 5.7 (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.118 , ≤ 6.6.* (semver) Unaffected: 6.12.60 , ≤ 6.12.* (semver) Unaffected: 6.17.10 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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CVE-2025-40284 (GCVE-0-2025-40284)
Vulnerability from cvelistv5 – Published: 2025-12-06 21:51 – Updated: 2026-05-11 21:46
VLAI?
EPSS
Title
Bluetooth: MGMT: cancel mesh send timer when hdev removed
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: cancel mesh send timer when hdev removed
mesh_send_done timer is not canceled when hdev is removed, which causes
crash if the timer triggers after hdev is gone.
Cancel the timer when MGMT removes the hdev, like other MGMT timers.
Should fix the BUG: sporadically seen by BlueZ test bot
(in "Mesh - Send cancel - 1" test).
Log:
------
BUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0
...
Freed by task 36:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_save_free_info+0x3a/0x60
__kasan_slab_free+0x43/0x70
kfree+0x103/0x500
device_release+0x9a/0x210
kobject_put+0x100/0x1e0
vhci_release+0x18b/0x240
------
Severity ?
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 990e6143b0ca0c66f099d67d00c112bf59b30d76
(git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 2927ff643607eddf4f03d10ef80fe10d977154aa (git) Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b (git) Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < fd62ca5ad136dcf6f5aa308423b299a6be6f54ea (git) Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 55fb52ffdd62850d667ebed842815e072d3c9961 (git) |
|
| Linux | Linux |
Affected:
6.1
Unaffected: 0 , < 6.1 (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.59 , ≤ 6.12.* (semver) Unaffected: 6.17.9 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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CVE-2025-40297 (GCVE-0-2025-40297)
Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-05-11 21:46
VLAI?
EPSS
Title
net: bridge: fix use-after-free due to MST port state bypass
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: bridge: fix use-after-free due to MST port state bypass
syzbot reported[1] a use-after-free when deleting an expired fdb. It is
due to a race condition between learning still happening and a port being
deleted, after all its fdbs have been flushed. The port's state has been
toggled to disabled so no learning should happen at that time, but if we
have MST enabled, it will bypass the port's state, that together with VLAN
filtering disabled can lead to fdb learning at a time when it shouldn't
happen while the port is being deleted. VLAN filtering must be disabled
because we flush the port VLANs when it's being deleted which will stop
learning. This fix adds a check for the port's vlan group which is
initialized to NULL when the port is getting deleted, that avoids the port
state bypass. When MST is enabled there would be a minimal new overhead
in the fast-path because the port's vlan group pointer is cache-hot.
[1] https://syzkaller.appspot.com/bug?extid=dd280197f0f7ab3917be
Severity ?
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
ec7328b59176227216c461601c6bd0e922232a9b , < e19085b2a86addccff33ab8536fc67ebd9d52198
(git)
Affected: ec7328b59176227216c461601c6bd0e922232a9b , < 3b60ce334c1ce8b3fad7e02dcd5ed9f6646477c8 (git) Affected: ec7328b59176227216c461601c6bd0e922232a9b , < bf3843183bc3158e5821b46f330c438ae9bd6ddb (git) Affected: ec7328b59176227216c461601c6bd0e922232a9b , < 991fbe1680cd41a5f97c92cd3a3496315df36e4b (git) Affected: ec7328b59176227216c461601c6bd0e922232a9b , < 8dca36978aa80bab9d4da130c211db75c9e00048 (git) |
|
| Linux | Linux |
Affected:
5.18
Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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CVE-2025-68284 (GCVE-0-2025-68284)
Vulnerability from cvelistv5 – Published: 2025-12-16 15:06 – Updated: 2026-05-11 21:50
VLAI?
EPSS
Title
libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
The len field originates from untrusted network packets. Boundary
checks have been added to prevent potential out-of-bounds writes when
decrypting the connection secret or processing service tickets.
[ idryomov: changelog ]
Severity ?
No CVSS data available.
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/f22c55a20a2d9ffbb… | |
| https://git.kernel.org/stable/c/8dfcc56af28cffb8f… | |
| https://git.kernel.org/stable/c/ccbccfba25e9aa395… | |
| https://git.kernel.org/stable/c/5ef575834ca99f719… | |
| https://git.kernel.org/stable/c/6920ff09bf911bc91… | |
| https://git.kernel.org/stable/c/7fce830ecd0a02565… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 , < f22c55a20a2d9ffbbac57408d5d488cef8201e9d
(git)
Affected: 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 , < 8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09 (git) Affected: 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 , < ccbccfba25e9aa395daaea156b5e7790910054c4 (git) Affected: 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 , < 5ef575834ca99f719d7573cdece9df2fe2b72424 (git) Affected: 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 , < 6920ff09bf911bc919cd7a6b7176fbdd1a6e6850 (git) Affected: 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 , < 7fce830ecd0a0256590ee37eb65a39cbad3d64fc (git) |
|
| Linux | Linux |
Affected:
5.11
Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.119 , ≤ 6.6.* (semver) Unaffected: 6.12.61 , ≤ 6.12.* (semver) Unaffected: 6.17.11 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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CVE-2025-68285 (GCVE-0-2025-68285)
Vulnerability from cvelistv5 – Published: 2025-12-16 15:06 – Updated: 2026-05-11 21:50
VLAI?
EPSS
Title
libceph: fix potential use-after-free in have_mon_and_osd_map()
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: fix potential use-after-free in have_mon_and_osd_map()
The wait loop in __ceph_open_session() can race with the client
receiving a new monmap or osdmap shortly after the initial map is
received. Both ceph_monc_handle_map() and handle_one_map() install
a new map immediately after freeing the old one
kfree(monc->monmap);
monc->monmap = monmap;
ceph_osdmap_destroy(osdc->osdmap);
osdc->osdmap = newmap;
under client->monc.mutex and client->osdc.lock respectively, but
because neither is taken in have_mon_and_osd_map() it's possible for
client->monc.monmap->epoch and client->osdc.osdmap->epoch arms in
client->monc.monmap && client->monc.monmap->epoch &&
client->osdc.osdmap && client->osdc.osdmap->epoch;
condition to dereference an already freed map. This happens to be
reproducible with generic/395 and generic/397 with KASAN enabled:
BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70
Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305
CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266
...
Call Trace:
<TASK>
have_mon_and_osd_map+0x56/0x70
ceph_open_session+0x182/0x290
ceph_get_tree+0x333/0x680
vfs_get_tree+0x49/0x180
do_new_mount+0x1a3/0x2d0
path_mount+0x6dd/0x730
do_mount+0x99/0xe0
__do_sys_mount+0x141/0x180
do_syscall_64+0x9f/0x100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
</TASK>
Allocated by task 13305:
ceph_osdmap_alloc+0x16/0x130
ceph_osdc_init+0x27a/0x4c0
ceph_create_client+0x153/0x190
create_fs_client+0x50/0x2a0
ceph_get_tree+0xff/0x680
vfs_get_tree+0x49/0x180
do_new_mount+0x1a3/0x2d0
path_mount+0x6dd/0x730
do_mount+0x99/0xe0
__do_sys_mount+0x141/0x180
do_syscall_64+0x9f/0x100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 9475:
kfree+0x212/0x290
handle_one_map+0x23c/0x3b0
ceph_osdc_handle_map+0x3c9/0x590
mon_dispatch+0x655/0x6f0
ceph_con_process_message+0xc3/0xe0
ceph_con_v1_try_read+0x614/0x760
ceph_con_workfn+0x2de/0x650
process_one_work+0x486/0x7c0
process_scheduled_works+0x73/0x90
worker_thread+0x1c8/0x2a0
kthread+0x2ec/0x300
ret_from_fork+0x24/0x40
ret_from_fork_asm+0x1a/0x30
Rewrite the wait loop to check the above condition directly with
client->monc.mutex and client->osdc.lock taken as appropriate. While
at it, improve the timeout handling (previously mount_timeout could be
exceeded in case wait_event_interruptible_timeout() slept more than
once) and access client->auth_err under client->monc.mutex to match
how it's set in finish_auth().
monmap_show() and osdmap_show() now take the respective lock before
accessing the map as well.
Severity ?
No CVSS data available.
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/bb4910c5fd436701f… | |
| https://git.kernel.org/stable/c/05ec43e9a9de67132… | |
| https://git.kernel.org/stable/c/7c8ccdc1714d9fabe… | |
| https://git.kernel.org/stable/c/183ad6e3b651e8fb0… | |
| https://git.kernel.org/stable/c/e08021b3b56b2407f… | |
| https://git.kernel.org/stable/c/3fc43120b22a3d4f1… | |
| https://git.kernel.org/stable/c/076381c261374c587… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < bb4910c5fd436701faf367e1b5476a5a6d2aff1c
(git)
Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 05ec43e9a9de67132dc8cd3b22afef001574947f (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 7c8ccdc1714d9fabecd26e1be7db1771061acc6e (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 183ad6e3b651e8fb0b66d6a2678f4b80bfbba092 (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < e08021b3b56b2407f37b5fe47b654be80cc665fb (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 3fc43120b22a3d4f1fbeff56a35ce2105b6a5683 (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 076381c261374c587700b3accf410bdd2dba334e (git) |
|
| Linux | Linux |
Affected:
2.6.35
Unaffected: 0 , < 2.6.35 (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.119 , ≤ 6.6.* (semver) Unaffected: 6.12.61 , ≤ 6.12.* (semver) Unaffected: 6.17.11 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: fix potential use-after-free in have_mon_and_osd_map()\n\nThe wait loop in __ceph_open_session() can race with the client\nreceiving a new monmap or osdmap shortly after the initial map is\nreceived. Both ceph_monc_handle_map() and handle_one_map() install\na new map immediately after freeing the old one\n\n kfree(monc-\u003emonmap);\n monc-\u003emonmap = monmap;\n\n ceph_osdmap_destroy(osdc-\u003eosdmap);\n osdc-\u003eosdmap = newmap;\n\nunder client-\u003emonc.mutex and client-\u003eosdc.lock respectively, but\nbecause neither is taken in have_mon_and_osd_map() it\u0027s possible for\nclient-\u003emonc.monmap-\u003eepoch and client-\u003eosdc.osdmap-\u003eepoch arms in\n\n client-\u003emonc.monmap \u0026\u0026 client-\u003emonc.monmap-\u003eepoch \u0026\u0026\n client-\u003eosdc.osdmap \u0026\u0026 client-\u003eosdc.osdmap-\u003eepoch;\n\ncondition to dereference an already freed map. This happens to be\nreproducible with generic/395 and generic/397 with KASAN enabled:\n\n BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70\n Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305\n CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266\n ...\n Call Trace:\n \u003cTASK\u003e\n have_mon_and_osd_map+0x56/0x70\n ceph_open_session+0x182/0x290\n ceph_get_tree+0x333/0x680\n vfs_get_tree+0x49/0x180\n do_new_mount+0x1a3/0x2d0\n path_mount+0x6dd/0x730\n do_mount+0x99/0xe0\n __do_sys_mount+0x141/0x180\n do_syscall_64+0x9f/0x100\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n \u003c/TASK\u003e\n\n Allocated by task 13305:\n ceph_osdmap_alloc+0x16/0x130\n ceph_osdc_init+0x27a/0x4c0\n ceph_create_client+0x153/0x190\n create_fs_client+0x50/0x2a0\n ceph_get_tree+0xff/0x680\n vfs_get_tree+0x49/0x180\n do_new_mount+0x1a3/0x2d0\n path_mount+0x6dd/0x730\n do_mount+0x99/0xe0\n __do_sys_mount+0x141/0x180\n do_syscall_64+0x9f/0x100\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n Freed by task 9475:\n kfree+0x212/0x290\n handle_one_map+0x23c/0x3b0\n ceph_osdc_handle_map+0x3c9/0x590\n mon_dispatch+0x655/0x6f0\n ceph_con_process_message+0xc3/0xe0\n ceph_con_v1_try_read+0x614/0x760\n ceph_con_workfn+0x2de/0x650\n process_one_work+0x486/0x7c0\n process_scheduled_works+0x73/0x90\n worker_thread+0x1c8/0x2a0\n kthread+0x2ec/0x300\n ret_from_fork+0x24/0x40\n ret_from_fork_asm+0x1a/0x30\n\nRewrite the wait loop to check the above condition directly with\nclient-\u003emonc.mutex and client-\u003eosdc.lock taken as appropriate. While\nat it, improve the timeout handling (previously mount_timeout could be\nexceeded in case wait_event_interruptible_timeout() slept more than\nonce) and access client-\u003eauth_err under client-\u003emonc.mutex to match\nhow it\u0027s set in finish_auth().\n\nmonmap_show() and osdmap_show() now take the respective lock before\naccessing the map as well."
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CVE-2025-68312 (GCVE-0-2025-68312)
Vulnerability from cvelistv5 – Published: 2025-12-16 15:39 – Updated: 2026-05-23 16:02
VLAI?
EPSS
Title
usbnet: Prevents free active kevent
Summary
In the Linux kernel, the following vulnerability has been resolved:
usbnet: Prevents free active kevent
The root cause of this issue are:
1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);
put the kevent work in global workqueue. However, the kevent has not yet
been scheduled when the usbnet device is unregistered. Therefore, executing
free_netdev() results in the "free active object (kevent)" error reported
here.
2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(),
if the usbnet device is up, ndo_stop() is executed to cancel the kevent.
However, because the device is not up, ndo_stop() is not executed.
The solution to this problem is to cancel the kevent before executing
free_netdev().
Severity ?
No CVSS data available.
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/285d4b953f2ca03c3… | |
| https://git.kernel.org/stable/c/88a38b135d69f5db9… | |
| https://git.kernel.org/stable/c/43005002b60ef3424… | |
| https://git.kernel.org/stable/c/3a10619fdefd3051a… | |
| https://git.kernel.org/stable/c/9a579d6a39513069d… | |
| https://git.kernel.org/stable/c/2ce1de32e05445d77… | |
| https://git.kernel.org/stable/c/5158fb8da162e3982… | |
| https://git.kernel.org/stable/c/420c84c330d1688b8… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
8b4588b8b00b299be16a35be67b331d8fdba03f3 , < 285d4b953f2ca03c358f986718dd89ee9bde632e
(git)
Affected: 135199a2edd459d2b123144efcd7f9bcd95128e4 , < 88a38b135d69f5db9024ff6527232f1b51be8915 (git) Affected: 635fd8953e4309b54ca6a81bed1d4a87668694f4 , < 43005002b60ef3424719ecda16d124714b45da3b (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 3a10619fdefd3051aeb14860e4d4335529b4e94d (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 9a579d6a39513069d298eee70770bbac8a148565 (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 2ce1de32e05445d77fc056f6ff8339cfb78a5f84 (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 5158fb8da162e3982940f30cd01ed77bdf42c6fc (git) Affected: a69e617e533edddf3fa3123149900f36e0a6dc74 , < 420c84c330d1688b8c764479e5738bbdbf0a33de (git) Affected: d2d6b530d89b0a912148018027386aa049f0a309 (git) Affected: e2a521a7dcc463c5017b4426ca0804e151faeff7 (git) Affected: 7f77dcbc030c2faa6d8e8a594985eeb34018409e (git) Affected: d49bb8cf9bfaa06aa527eb30f1a52a071da2e32f (git) Affected: db3b738ae5f726204876f4303c49cfdf4311403f (git) Affected: 5.4.211 , < 5.4.302 (semver) Affected: 5.10.137 , < 5.10.247 (semver) Affected: 5.15.61 , < 5.15.197 (semver) Affected: 4.9.326 , < 4.10 (semver) Affected: 4.14.291 , < 4.15 (semver) Affected: 4.19.256 , < 4.20 (semver) Affected: 5.18.18 , < 5.19 (semver) Affected: 5.19.2 , < 5.20 (semver) |
|
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 5.4.302 , ≤ 5.4.* (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Prevents free active kevent\n\nThe root cause of this issue are:\n1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);\nput the kevent work in global workqueue. However, the kevent has not yet\nbeen scheduled when the usbnet device is unregistered. Therefore, executing\nfree_netdev() results in the \"free active object (kevent)\" error reported\nhere.\n\n2. Another factor is that when calling usbnet_disconnect()-\u003eunregister_netdev(),\nif the usbnet device is up, ndo_stop() is executed to cancel the kevent.\nHowever, because the device is not up, ndo_stop() is not executed.\n\nThe solution to this problem is to cancel the kevent before executing\nfree_netdev()."
}
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CVE-2025-68813 (GCVE-0-2025-68813)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-05-23 16:02
VLAI?
EPSS
Title
ipvs: fix ipv4 null-ptr-deref in route error path
Summary
In the Linux kernel, the following vulnerability has been resolved:
ipvs: fix ipv4 null-ptr-deref in route error path
The IPv4 code path in __ip_vs_get_out_rt() calls dst_link_failure()
without ensuring skb->dev is set, leading to a NULL pointer dereference
in fib_compute_spec_dst() when ipv4_link_failure() attempts to send
ICMP destination unreachable messages.
The issue emerged after commit ed0de45a1008 ("ipv4: recompile ip options
in ipv4_link_failure") started calling __ip_options_compile() from
ipv4_link_failure(). This code path eventually calls fib_compute_spec_dst()
which dereferences skb->dev. An attempt was made to fix the NULL skb->dev
dereference in commit 0113d9c9d1cc ("ipv4: fix null-deref in
ipv4_link_failure"), but it only addressed the immediate dev_net(skb->dev)
dereference by using a fallback device. The fix was incomplete because
fib_compute_spec_dst() later in the call chain still accesses skb->dev
directly, which remains NULL when IPVS calls dst_link_failure().
The crash occurs when:
1. IPVS processes a packet in NAT mode with a misconfigured destination
2. Route lookup fails in __ip_vs_get_out_rt() before establishing a route
3. The error path calls dst_link_failure(skb) with skb->dev == NULL
4. ipv4_link_failure() → ipv4_send_dest_unreach() →
__ip_options_compile() → fib_compute_spec_dst()
5. fib_compute_spec_dst() dereferences NULL skb->dev
Apply the same fix used for IPv6 in commit 326bf17ea5d4 ("ipvs: fix
ipv6 route unreach panic"): set skb->dev from skb_dst(skb)->dev before
calling dst_link_failure().
KASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f]
CPU: 1 PID: 12732 Comm: syz.1.3469 Not tainted 6.6.114 #2
RIP: 0010:__in_dev_get_rcu include/linux/inetdevice.h:233
RIP: 0010:fib_compute_spec_dst+0x17a/0x9f0 net/ipv4/fib_frontend.c:285
Call Trace:
<TASK>
spec_dst_fill net/ipv4/ip_options.c:232
spec_dst_fill net/ipv4/ip_options.c:229
__ip_options_compile+0x13a1/0x17d0 net/ipv4/ip_options.c:330
ipv4_send_dest_unreach net/ipv4/route.c:1252
ipv4_link_failure+0x702/0xb80 net/ipv4/route.c:1265
dst_link_failure include/net/dst.h:437
__ip_vs_get_out_rt+0x15fd/0x19e0 net/netfilter/ipvs/ip_vs_xmit.c:412
ip_vs_nat_xmit+0x1d8/0xc80 net/netfilter/ipvs/ip_vs_xmit.c:764
Severity ?
No CVSS data available.
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/dd72a93c80408f063… | |
| https://git.kernel.org/stable/c/312d7cd88882fc6ca… | |
| https://git.kernel.org/stable/c/cdeff10851c37a002… | |
| https://git.kernel.org/stable/c/4729ff0581fbb7ad0… | |
| https://git.kernel.org/stable/c/25ab24df31f7af843… | |
| https://git.kernel.org/stable/c/689a627d14788ad77… | |
| https://git.kernel.org/stable/c/ad891bb3d079a46a8… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
ed0de45a1008991fdaa27a0152befcb74d126a8b , < dd72a93c80408f06327dd2d956eb1a656d0b5903
(git)
Affected: ed0de45a1008991fdaa27a0152befcb74d126a8b , < 312d7cd88882fc6cadcc08b02287497aaaf94bcd (git) Affected: ed0de45a1008991fdaa27a0152befcb74d126a8b , < cdeff10851c37a002d87a035818ebd60fdb74447 (git) Affected: ed0de45a1008991fdaa27a0152befcb74d126a8b , < 4729ff0581fbb7ad098b6153b76b6f5aac94618a (git) Affected: ed0de45a1008991fdaa27a0152befcb74d126a8b , < 25ab24df31f7af843c96a38e0781b9165216e1a8 (git) Affected: ed0de45a1008991fdaa27a0152befcb74d126a8b , < 689a627d14788ad772e0fa24c2e57a23dbc7ce90 (git) Affected: ed0de45a1008991fdaa27a0152befcb74d126a8b , < ad891bb3d079a46a821bf2b8867854645191bab0 (git) Affected: 6c2fa855d8178699706b1192db2f1f8102b0ba1e (git) Affected: fbf569d2beee2a4a7a0bc8b619c26101d1211a88 (git) Affected: ff71f99d5fb2daf54340e8b290d0bc4e6b4c1d38 (git) Affected: 3d988fcddbe7b8673a231958bd2fba61b5a7ced9 (git) Affected: 8a430e56a6485267a1b2d3747209d26c54d1a34b (git) Affected: 6bd1ee0a993fc9574ae43c1994c54a60cb23a380 (git) Affected: 3.18.139 , < 3.19 (semver) Affected: 4.4.179 , < 4.5 (semver) Affected: 4.9.171 , < 4.10 (semver) Affected: 4.14.114 , < 4.15 (semver) Affected: 4.19.37 , < 4.20 (semver) Affected: 5.0.10 , < 5.1 (semver) |
|
| Linux | Linux |
Affected:
5.1
Unaffected: 0 , < 5.1 (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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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: fix ipv4 null-ptr-deref in route error path\n\nThe IPv4 code path in __ip_vs_get_out_rt() calls dst_link_failure()\nwithout ensuring skb-\u003edev is set, leading to a NULL pointer dereference\nin fib_compute_spec_dst() when ipv4_link_failure() attempts to send\nICMP destination unreachable messages.\n\nThe issue emerged after commit ed0de45a1008 (\"ipv4: recompile ip options\nin ipv4_link_failure\") started calling __ip_options_compile() from\nipv4_link_failure(). This code path eventually calls fib_compute_spec_dst()\nwhich dereferences skb-\u003edev. An attempt was made to fix the NULL skb-\u003edev\ndereference in commit 0113d9c9d1cc (\"ipv4: fix null-deref in\nipv4_link_failure\"), but it only addressed the immediate dev_net(skb-\u003edev)\ndereference by using a fallback device. The fix was incomplete because\nfib_compute_spec_dst() later in the call chain still accesses skb-\u003edev\ndirectly, which remains NULL when IPVS calls dst_link_failure().\n\nThe crash occurs when:\n1. IPVS processes a packet in NAT mode with a misconfigured destination\n2. Route lookup fails in __ip_vs_get_out_rt() before establishing a route\n3. The error path calls dst_link_failure(skb) with skb-\u003edev == NULL\n4. ipv4_link_failure() \u2192 ipv4_send_dest_unreach() \u2192\n __ip_options_compile() \u2192 fib_compute_spec_dst()\n5. fib_compute_spec_dst() dereferences NULL skb-\u003edev\n\nApply the same fix used for IPv6 in commit 326bf17ea5d4 (\"ipvs: fix\nipv6 route unreach panic\"): set skb-\u003edev from skb_dst(skb)-\u003edev before\ncalling dst_link_failure().\n\nKASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f]\nCPU: 1 PID: 12732 Comm: syz.1.3469 Not tainted 6.6.114 #2\nRIP: 0010:__in_dev_get_rcu include/linux/inetdevice.h:233\nRIP: 0010:fib_compute_spec_dst+0x17a/0x9f0 net/ipv4/fib_frontend.c:285\nCall Trace:\n \u003cTASK\u003e\n spec_dst_fill net/ipv4/ip_options.c:232\n spec_dst_fill net/ipv4/ip_options.c:229\n __ip_options_compile+0x13a1/0x17d0 net/ipv4/ip_options.c:330\n ipv4_send_dest_unreach net/ipv4/route.c:1252\n ipv4_link_failure+0x702/0xb80 net/ipv4/route.c:1265\n dst_link_failure include/net/dst.h:437\n __ip_vs_get_out_rt+0x15fd/0x19e0 net/netfilter/ipvs/ip_vs_xmit.c:412\n ip_vs_nat_xmit+0x1d8/0xc80 net/netfilter/ipvs/ip_vs_xmit.c:764"
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"title": "ipvs: fix ipv4 null-ptr-deref in route error path",
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"datePublished": "2026-01-13T15:29:18.483Z",
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CVE-2025-71066 (GCVE-0-2025-71066)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:31 – Updated: 2026-05-23 16:03
VLAI?
EPSS
Title
net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change
zdi-disclosures@trendmicro.com says:
The vulnerability is a race condition between `ets_qdisc_dequeue` and
`ets_qdisc_change`. It leads to UAF on `struct Qdisc` object.
Attacker requires the capability to create new user and network namespace
in order to trigger the bug.
See my additional commentary at the end of the analysis.
Analysis:
static int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt,
struct netlink_ext_ack *extack)
{
...
// (1) this lock is preventing .change handler (`ets_qdisc_change`)
//to race with .dequeue handler (`ets_qdisc_dequeue`)
sch_tree_lock(sch);
for (i = nbands; i < oldbands; i++) {
if (i >= q->nstrict && q->classes[i].qdisc->q.qlen)
list_del_init(&q->classes[i].alist);
qdisc_purge_queue(q->classes[i].qdisc);
}
WRITE_ONCE(q->nbands, nbands);
for (i = nstrict; i < q->nstrict; i++) {
if (q->classes[i].qdisc->q.qlen) {
// (2) the class is added to the q->active
list_add_tail(&q->classes[i].alist, &q->active);
q->classes[i].deficit = quanta[i];
}
}
WRITE_ONCE(q->nstrict, nstrict);
memcpy(q->prio2band, priomap, sizeof(priomap));
for (i = 0; i < q->nbands; i++)
WRITE_ONCE(q->classes[i].quantum, quanta[i]);
for (i = oldbands; i < q->nbands; i++) {
q->classes[i].qdisc = queues[i];
if (q->classes[i].qdisc != &noop_qdisc)
qdisc_hash_add(q->classes[i].qdisc, true);
}
// (3) the qdisc is unlocked, now dequeue can be called in parallel
// to the rest of .change handler
sch_tree_unlock(sch);
ets_offload_change(sch);
for (i = q->nbands; i < oldbands; i++) {
// (4) we're reducing the refcount for our class's qdisc and
// freeing it
qdisc_put(q->classes[i].qdisc);
// (5) If we call .dequeue between (4) and (5), we will have
// a strong UAF and we can control RIP
q->classes[i].qdisc = NULL;
WRITE_ONCE(q->classes[i].quantum, 0);
q->classes[i].deficit = 0;
gnet_stats_basic_sync_init(&q->classes[i].bstats);
memset(&q->classes[i].qstats, 0, sizeof(q->classes[i].qstats));
}
return 0;
}
Comment:
This happens because some of the classes have their qdiscs assigned to
NULL, but remain in the active list. This commit fixes this issue by always
removing the class from the active list before deleting and freeing its
associated qdisc
Reproducer Steps
(trimmed version of what was sent by zdi-disclosures@trendmicro.com)
```
DEV="${DEV:-lo}"
ROOT_HANDLE="${ROOT_HANDLE:-1:}"
BAND2_HANDLE="${BAND2_HANDLE:-20:}" # child under 1:2
PING_BYTES="${PING_BYTES:-48}"
PING_COUNT="${PING_COUNT:-200000}"
PING_DST="${PING_DST:-127.0.0.1}"
SLOW_TBF_RATE="${SLOW_TBF_RATE:-8bit}"
SLOW_TBF_BURST="${SLOW_TBF_BURST:-100b}"
SLOW_TBF_LAT="${SLOW_TBF_LAT:-1s}"
cleanup() {
tc qdisc del dev "$DEV" root 2>/dev/null
}
trap cleanup EXIT
ip link set "$DEV" up
tc qdisc del dev "$DEV" root 2>/dev/null || true
tc qdisc add dev "$DEV" root handle "$ROOT_HANDLE" ets bands 2 strict 2
tc qdisc add dev "$DEV" parent 1:2 handle "$BAND2_HANDLE" \
tbf rate "$SLOW_TBF_RATE" burst "$SLOW_TBF_BURST" latency "$SLOW_TBF_LAT"
tc filter add dev "$DEV" parent 1: protocol all prio 1 u32 match u32 0 0 flowid 1:2
tc -s qdisc ls dev $DEV
ping -I "$DEV" -f -c "$PING_COUNT" -s "$PING_BYTES" -W 0.001 "$PING_DST" \
>/dev/null 2>&1 &
tc qdisc change dev "$DEV" root handle "$ROOT_HANDLE" ets bands 2 strict 0
tc qdisc change dev "$DEV" root handle "$ROOT_HANDLE" ets bands 2 strict 2
tc -s qdisc ls dev $DEV
tc qdisc del dev "$DEV" parent
---truncated---
Severity ?
7.5 (High)
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/062d5d544e5644734… | |
| https://git.kernel.org/stable/c/c7f6e7cc14df72b99… | |
| https://git.kernel.org/stable/c/a75d617a4ef08682f… | |
| https://git.kernel.org/stable/c/9987cda315c08f63a… | |
| https://git.kernel.org/stable/c/06bfb66a7c8b45e3f… | |
| https://git.kernel.org/stable/c/45466141da3c98a0c… | |
| https://git.kernel.org/stable/c/ce052b9402e461a9a… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
ae2659d2c670252759ee9c823c4e039c0e05a6f2 , < 062d5d544e564473450d72e6af83077c2b2ff7c3
(git)
Affected: e25bdbc7e951ae5728fee1f4c09485df113d013c , < c7f6e7cc14df72b997258216e99d897d2df0dbbd (git) Affected: de6d25924c2a8c2988c6a385990cafbe742061bf , < a75d617a4ef08682f5cfaadc01d5141c87e019c9 (git) Affected: de6d25924c2a8c2988c6a385990cafbe742061bf , < 9987cda315c08f63a02423fa2f9a1f6602c861a0 (git) Affected: de6d25924c2a8c2988c6a385990cafbe742061bf , < 06bfb66a7c8b45e3fed01351a4b087410ae5ef39 (git) Affected: de6d25924c2a8c2988c6a385990cafbe742061bf , < 45466141da3c98a0c5fa88be0bc14b4b6a4bd75c (git) Affected: de6d25924c2a8c2988c6a385990cafbe742061bf , < ce052b9402e461a9aded599f5b47e76bc727f7de (git) Affected: 5.10.83 , < 5.10.248 (semver) Affected: 5.15.6 , < 5.15.198 (semver) |
|
| Linux | Linux |
Affected:
5.16
Unaffected: 0 , < 5.16 (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) |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-71066",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-22T03:55:51.470582Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T12:50:15.711Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/sched/sch_ets.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "062d5d544e564473450d72e6af83077c2b2ff7c3",
"status": "affected",
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"versionType": "git"
},
{
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{
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"versionType": "git"
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{
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"versionType": "git"
},
{
"lessThan": "45466141da3c98a0c5fa88be0bc14b4b6a4bd75c",
"status": "affected",
"version": "de6d25924c2a8c2988c6a385990cafbe742061bf",
"versionType": "git"
},
{
"lessThan": "ce052b9402e461a9aded599f5b47e76bc727f7de",
"status": "affected",
"version": "de6d25924c2a8c2988c6a385990cafbe742061bf",
"versionType": "git"
},
{
"lessThan": "5.10.248",
"status": "affected",
"version": "5.10.83",
"versionType": "semver"
},
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"status": "affected",
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}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/sched/sch_ets.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.16"
},
{
"lessThan": "5.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.248",
"versionStartIncluding": "5.10.83",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.198",
"versionStartIncluding": "5.15.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.160",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.120",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.64",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.3",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
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"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: ets: Always remove class from active list before deleting in ets_qdisc_change\n\nzdi-disclosures@trendmicro.com says:\n\nThe vulnerability is a race condition between `ets_qdisc_dequeue` and\n`ets_qdisc_change`. It leads to UAF on `struct Qdisc` object.\nAttacker requires the capability to create new user and network namespace\nin order to trigger the bug.\nSee my additional commentary at the end of the analysis.\n\nAnalysis:\n\nstatic int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt,\n struct netlink_ext_ack *extack)\n{\n...\n\n // (1) this lock is preventing .change handler (`ets_qdisc_change`)\n //to race with .dequeue handler (`ets_qdisc_dequeue`)\n sch_tree_lock(sch);\n\n for (i = nbands; i \u003c oldbands; i++) {\n if (i \u003e= q-\u003enstrict \u0026\u0026 q-\u003eclasses[i].qdisc-\u003eq.qlen)\n list_del_init(\u0026q-\u003eclasses[i].alist);\n qdisc_purge_queue(q-\u003eclasses[i].qdisc);\n }\n\n WRITE_ONCE(q-\u003enbands, nbands);\n for (i = nstrict; i \u003c q-\u003enstrict; i++) {\n if (q-\u003eclasses[i].qdisc-\u003eq.qlen) {\n\t\t // (2) the class is added to the q-\u003eactive\n list_add_tail(\u0026q-\u003eclasses[i].alist, \u0026q-\u003eactive);\n q-\u003eclasses[i].deficit = quanta[i];\n }\n }\n WRITE_ONCE(q-\u003enstrict, nstrict);\n memcpy(q-\u003eprio2band, priomap, sizeof(priomap));\n\n for (i = 0; i \u003c q-\u003enbands; i++)\n WRITE_ONCE(q-\u003eclasses[i].quantum, quanta[i]);\n\n for (i = oldbands; i \u003c q-\u003enbands; i++) {\n q-\u003eclasses[i].qdisc = queues[i];\n if (q-\u003eclasses[i].qdisc != \u0026noop_qdisc)\n qdisc_hash_add(q-\u003eclasses[i].qdisc, true);\n }\n\n // (3) the qdisc is unlocked, now dequeue can be called in parallel\n // to the rest of .change handler\n sch_tree_unlock(sch);\n\n ets_offload_change(sch);\n for (i = q-\u003enbands; i \u003c oldbands; i++) {\n\t // (4) we\u0027re reducing the refcount for our class\u0027s qdisc and\n\t // freeing it\n qdisc_put(q-\u003eclasses[i].qdisc);\n\t // (5) If we call .dequeue between (4) and (5), we will have\n\t // a strong UAF and we can control RIP\n q-\u003eclasses[i].qdisc = NULL;\n WRITE_ONCE(q-\u003eclasses[i].quantum, 0);\n q-\u003eclasses[i].deficit = 0;\n gnet_stats_basic_sync_init(\u0026q-\u003eclasses[i].bstats);\n memset(\u0026q-\u003eclasses[i].qstats, 0, sizeof(q-\u003eclasses[i].qstats));\n }\n return 0;\n}\n\nComment:\nThis happens because some of the classes have their qdiscs assigned to\nNULL, but remain in the active list. This commit fixes this issue by always\nremoving the class from the active list before deleting and freeing its\nassociated qdisc\n\nReproducer Steps\n(trimmed version of what was sent by zdi-disclosures@trendmicro.com)\n\n```\nDEV=\"${DEV:-lo}\"\nROOT_HANDLE=\"${ROOT_HANDLE:-1:}\"\nBAND2_HANDLE=\"${BAND2_HANDLE:-20:}\" # child under 1:2\nPING_BYTES=\"${PING_BYTES:-48}\"\nPING_COUNT=\"${PING_COUNT:-200000}\"\nPING_DST=\"${PING_DST:-127.0.0.1}\"\n\nSLOW_TBF_RATE=\"${SLOW_TBF_RATE:-8bit}\"\nSLOW_TBF_BURST=\"${SLOW_TBF_BURST:-100b}\"\nSLOW_TBF_LAT=\"${SLOW_TBF_LAT:-1s}\"\n\ncleanup() {\n tc qdisc del dev \"$DEV\" root 2\u003e/dev/null\n}\ntrap cleanup EXIT\n\nip link set \"$DEV\" up\n\ntc qdisc del dev \"$DEV\" root 2\u003e/dev/null || true\n\ntc qdisc add dev \"$DEV\" root handle \"$ROOT_HANDLE\" ets bands 2 strict 2\n\ntc qdisc add dev \"$DEV\" parent 1:2 handle \"$BAND2_HANDLE\" \\\n tbf rate \"$SLOW_TBF_RATE\" burst \"$SLOW_TBF_BURST\" latency \"$SLOW_TBF_LAT\"\n\ntc filter add dev \"$DEV\" parent 1: protocol all prio 1 u32 match u32 0 0 flowid 1:2\ntc -s qdisc ls dev $DEV\n\nping -I \"$DEV\" -f -c \"$PING_COUNT\" -s \"$PING_BYTES\" -W 0.001 \"$PING_DST\" \\\n \u003e/dev/null 2\u003e\u00261 \u0026\ntc qdisc change dev \"$DEV\" root handle \"$ROOT_HANDLE\" ets bands 2 strict 0\ntc qdisc change dev \"$DEV\" root handle \"$ROOT_HANDLE\" ets bands 2 strict 2\ntc -s qdisc ls dev $DEV\ntc qdisc del dev \"$DEV\" parent \n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-23T16:03:01.947Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/062d5d544e564473450d72e6af83077c2b2ff7c3"
},
{
"url": "https://git.kernel.org/stable/c/c7f6e7cc14df72b997258216e99d897d2df0dbbd"
},
{
"url": "https://git.kernel.org/stable/c/a75d617a4ef08682f5cfaadc01d5141c87e019c9"
},
{
"url": "https://git.kernel.org/stable/c/9987cda315c08f63a02423fa2f9a1f6602c861a0"
},
{
"url": "https://git.kernel.org/stable/c/06bfb66a7c8b45e3fed01351a4b087410ae5ef39"
},
{
"url": "https://git.kernel.org/stable/c/45466141da3c98a0c5fa88be0bc14b4b6a4bd75c"
},
{
"url": "https://git.kernel.org/stable/c/ce052b9402e461a9aded599f5b47e76bc727f7de"
}
],
"title": "net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-71066",
"datePublished": "2026-01-13T15:31:21.931Z",
"dateReserved": "2026-01-13T15:30:19.646Z",
"dateUpdated": "2026-05-23T16:03:01.947Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
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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