CVE-2025-21962 Information

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.

Reference

https://git.kernel.org/stable/c/1c46673be93dd2954f44fe370fb4f2b8e6214224 https://git.kernel.org/stable/c/6c13fcb7cf59ae65940da1dfea80144e42921e53 https://git.kernel.org/stable/c/9968fcf02cf6b0f78fbacf3f63e782162603855a https://git.kernel.org/stable/c/b24edd5c191c2689c59d0509f0903f9487eb6317 https://git.kernel.org/stable/c/d5a30fddfe2f2e540f6c43b59cf701809995faef