CVE-2025-21963 - CVE House
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Status published Unknown CVE-2025-21963

cifs: Fix integer overflow while processing acdirmax mount option

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing acdirmax mount option User-provided mount parameter acdirmax 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
4c9f948142a550af416a2bfb5e56d29ce29e92cf, 5.12, 0, 5.15.180, 6.1.132, 6.6.84, 6.12.20, 6.13.8, 6.14

Timeline

Official Publish: April 1st, 2025
Last Modified: May 11th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.