CVE-2025-40202
In the Linux kernel, the following vulnerability has been resolved: ipmi: Rework user message limit handling The limit on the number of user messages had a number of issues, improper counting in some cases and a use after free. Restructure how this is all done to handle more in the receive message allocation routine, so all refcouting and user message limit counts are done in that routine. It's a lot cleaner and safer.
Affected versions
Linux kernel versions
5.19
and later are affected. Fixed in
6.1.157,
6.6.113,
6.12.54,
6.17.4,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40202 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/0ed73be9a2547ffb9b5c1d879ad9bfab73d920b5
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PatchKernel patch commithttps://git.kernel.org/stable/c/348121b29594d42d1635648fd3ed31dfa25351d5
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PatchKernel patch commithttps://git.kernel.org/stable/c/53d6e403affbf6df2c859a0ea00ccfc1e72090ca
Frequently asked questions
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What is CVE-2025-40202?
CVE-2025-40202 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.19 onward and has been patched in 6.1.157, 6.6.113, 6.12.54 and others. CVE-2025-40202 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-2025-40202?
Yes — CVE-2025-40202 has been patched. Fixed versions include 6.1.157, 6.6.113, 6.12.54 and others. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40202 actively exploited?
No — CVE-2025-40202 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.