CVE-2025-40036
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.
Affected versions
Linux kernel versions
5.1
and later are affected. Fixed in
6.1.156,
6.6.112,
6.12.53,
6.17.3,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40036 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/3ad42dc66445df6977cf4be0c06f1a655299ce6c
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PatchKernel patch commithttps://git.kernel.org/stable/c/78d33a041555db03903e8037fd053ed74fbd88cb
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PatchKernel patch commithttps://git.kernel.org/stable/c/a085658264d0c8d4f795d4631f77d7289a021de9
Frequently asked questions
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What is CVE-2025-40036?
CVE-2025-40036 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.1 onward and has been patched in 6.1.156, 6.6.112, 6.12.53 and others. CVE-2025-40036 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-2025-40036?
Yes — CVE-2025-40036 has been patched. Fixed versions include 6.1.156, 6.6.112, 6.12.53 and others. If you are running Linux kernel 5.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40036 actively exploited?
No — CVE-2025-40036 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.