CVE-2025-40331
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).
Affected versions
Linux kernel versions
4.7
and later are affected. Fixed in
5.4.302,
5.10.247,
5.15.197,
6.1.159,
6.6.117,
6.12.58,
6.17.8,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40331 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/2fe08fcaacb7eb019fa9c81db39b2214de216677
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PatchKernel patch commithttps://git.kernel.org/stable/c/3006959371007fc2eae4a078f823c680fa52de1a
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PatchKernel patch commithttps://git.kernel.org/stable/c/584307275b2048991b2e8984962189b6cc0a9b85
Frequently asked questions
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What is CVE-2025-40331?
CVE-2025-40331 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.7 onward and has been patched in 5.4.302, 5.10.247, 5.15.197 and others. CVE-2025-40331 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-40331?
Yes — CVE-2025-40331 has been patched. Fixed versions include 5.4.302, 5.10.247, 5.15.197 and others. If you are running Linux kernel 4.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40331 actively exploited?
No — CVE-2025-40331 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.