CVE-2025-40331 (GCVE-0-2025-40331)
Vulnerability from cvelistv5 – Published: 2025-12-09 04:09 – Updated: 2026-08-05 12:09
VLAI
EPSS
VEX
Title
sctp: Prevent TOCTOU out-of-bounds write
Summary
In the Linux kernel, the following vulnerability has been resolved:
sctp: Prevent TOCTOU out-of-bounds write
For the following path not holding the sock lock,
sctp_diag_dump() -> sctp_for_each_endpoint() -> sctp_ep_dump()
make sure not to exceed bounds in case the address list has grown
between buffer allocation (time-of-check) and write (time-of-use).
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 19:58 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
8f840e47f190cbe61a96945c13e9551048d42cef , < b106a68df0650b694b254427cd9250c04500edd3
(git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 3006959371007fc2eae4a078f823c680fa52de1a (git) Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 72e3fea68eac8d088e44c3dd954e843478e9240e (git) Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 584307275b2048991b2e8984962189b6cc0a9b85 (git) Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < c9119f243d9c0da3c3b5f577a328de3e7ffd1b42 (git) Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 2fe08fcaacb7eb019fa9c81db39b2214de216677 (git) Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 89eac1e150dbd42963e13d23828cb8c4e0763196 (git) Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 95aef86ab231f047bb8085c70666059b58f53c09 (git) |
guessed | |
| Linux | Linux |
Affected:
4.7
Unaffected: 0 , < 4.7 (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) |
guessed |
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"title": "kernel: sctp: Prevent TOCTOU out-of-bounds write",
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"version": "3"
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},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:58:03.978750Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:58:10.002Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/sctp/diag.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "b106a68df0650b694b254427cd9250c04500edd3",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "3006959371007fc2eae4a078f823c680fa52de1a",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "72e3fea68eac8d088e44c3dd954e843478e9240e",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "584307275b2048991b2e8984962189b6cc0a9b85",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "c9119f243d9c0da3c3b5f577a328de3e7ffd1b42",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "2fe08fcaacb7eb019fa9c81db39b2214de216677",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "89eac1e150dbd42963e13d23828cb8c4e0763196",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
},
{
"lessThan": "95aef86ab231f047bb8085c70666059b58f53c09",
"status": "affected",
"version": "8f840e47f190cbe61a96945c13e9551048d42cef",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/sctp/diag.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.7"
},
{
"lessThan": "4.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.302",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.247",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.197",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.117",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.58",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.8",
"versionStartIncluding": "4.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "4.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: Prevent TOCTOU out-of-bounds write\n\nFor the following path not holding the sock lock,\n\n sctp_diag_dump() -\u003e sctp_for_each_endpoint() -\u003e sctp_ep_dump()\n\nmake sure not to exceed bounds in case the address list has grown\nbetween buffer allocation (time-of-check) and write (time-of-use)."
}
],
"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": "2026-07-30T06:02:53.345Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/b106a68df0650b694b254427cd9250c04500edd3"
},
{
"url": "https://git.kernel.org/stable/c/3006959371007fc2eae4a078f823c680fa52de1a"
},
{
"url": "https://git.kernel.org/stable/c/72e3fea68eac8d088e44c3dd954e843478e9240e"
},
{
"url": "https://git.kernel.org/stable/c/584307275b2048991b2e8984962189b6cc0a9b85"
},
{
"url": "https://git.kernel.org/stable/c/c9119f243d9c0da3c3b5f577a328de3e7ffd1b42"
},
{
"url": "https://git.kernel.org/stable/c/2fe08fcaacb7eb019fa9c81db39b2214de216677"
},
{
"url": "https://git.kernel.org/stable/c/89eac1e150dbd42963e13d23828cb8c4e0763196"
},
{
"url": "https://git.kernel.org/stable/c/95aef86ab231f047bb8085c70666059b58f53c09"
}
],
"title": "sctp: Prevent TOCTOU out-of-bounds write",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40331",
"datePublished": "2025-12-09T04:09:48.196Z",
"dateReserved": "2025-04-16T07:20:57.186Z",
"dateUpdated": "2026-07-30T06:02:53.345Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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