CVE-2025-21964

cifs: Fix integer overflow while processing acregmax mount option

CVSS 5.5 MEDIUMEPSS 0.2%CWE-190

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Apr 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing acregmax mount option User-provided mount parameter acregmax 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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/0252c33cc943e9e48ddfafaa6b1eb72adb68a099 https://git.kernel.org/stable/c/5f500874ab9b3cc8c169c2ab49f00b838520b9c5 https://git.kernel.org/stable/c/7489161b1852390b4413d57f2457cd40b34da6cc https://git.kernel.org/stable/c/833f2903eb8b70faca7967319e580e9ce69729fc https://git.kernel.org/stable/c/a13351624a6af8d91398860b8c9d4cf6c8e63de5 https://git.kernel.org/stable/c/dd190168e60ac15408f074a1fe0ce36aff34027b https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html