CVE-2025-40195
In the Linux kernel, the following vulnerability has been resolved: mount: handle NULL values in mnt_ns_release() When calling in listmount() mnt_ns_release() may be passed a NULL pointer. Handle that case gracefully.
Affected versions
Linux kernel versions
6.11
and later are affected. Fixed in
6.12.54,
6.17.4,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40195 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/2d68f8a7379d9c61005e982600c61948d4d019bd
-
PatchKernel patch commithttps://git.kernel.org/stable/c/6c7ca6a02f8f9549a438a08a23c6327580ecf3d6
-
PatchKernel patch commithttps://git.kernel.org/stable/c/99ae3e70a293834d0274c46a37120c71a24a4995
Frequently asked questions
-
What is CVE-2025-40195?
CVE-2025-40195 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.11 onward and has been patched in 6.12.54, 6.17.4 and 6.18. CVE-2025-40195 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2025-40195?
Yes — CVE-2025-40195 has been patched. Fixed versions include 6.12.54, 6.17.4 and 6.18. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2025-40195 actively exploited?
No — CVE-2025-40195 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.