CVE-2025-21964

Medium

Description

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.

SeverityMedium
CVSS5.5
Exploit probability—
ProductLinux Kernel
PublishedApr 1, 2025
First seenApr 1, 2025

How to fix

Update
  • linux linux_kernel5.15.180, 6.1.132, 6.6.84, 6.12.20, 6.13.8 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel5.12 ≤ v < 5.15.180, 5.16 ≤ v < 6.1.132, 6.2 ≤ v < 6.6.84, 6.7 ≤ v < 6.12.20, 6.13 ≤ v < 6.13.8, 6.145.15.180, 6.1.132, 6.6.84, 6.12.20, 6.13.8

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.

CVE-2025-21964 · Linux Kernel · Dark Radar