CVE-2025-40227
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc commit test ctx always The damon_ctx for testing online DAMON parameters commit inputs is deallocated only when the test fails. This means memory is leaked for every successful online DAMON parameters commit. Fix the leak by always deallocating it.
Affected versions
Linux kernel versions
6.15
and later are affected. Fixed in
6.17.6,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40227 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/139e7a572af0b45f558b5e502121a768dc328ba8
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PatchKernel patch commithttps://git.kernel.org/stable/c/ba236520ae53418859f4b7c7de3c71478d3c0b5a
Frequently asked questions
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What is CVE-2025-40227?
CVE-2025-40227 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.15 onward and has been patched in 6.17.6 and 6.18. CVE-2025-40227 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-2025-40227?
Yes — CVE-2025-40227 has been patched. Fixed versions include 6.17.6 and 6.18. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40227 actively exploited?
No — CVE-2025-40227 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.