Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing closetimeo mount option User-provided mount parameter closetimeo of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffies which can lead to an integer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15.107, < 5.15.180 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1c46673be93dd2954f44fe370fb4f2b8e6214224Patch
- https://git.kernel.org/stable/c/513f6cf2e906a504b7ab0b62b2eea993a6f64558Patch
- https://git.kernel.org/stable/c/6c13fcb7cf59ae65940da1dfea80144e42921e53Patch
- https://git.kernel.org/stable/c/9968fcf02cf6b0f78fbacf3f63e782162603855aPatch
- https://git.kernel.org/stable/c/b24edd5c191c2689c59d0509f0903f9487eb6317Patch
- https://git.kernel.org/stable/c/d5a30fddfe2f2e540f6c43b59cf701809995faefPatch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
FAQ
What is CVE-2025-21962?
CVE-2025-21962 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing closetimeo mount option User-provided mount parameter closetimeo of type u32 is intend...
How severe is CVE-2025-21962?
CVE-2025-21962 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21962?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.