CVE-2025-21963

Advisory lineage Upstream: 0 Downstream: 51
Modified
Published: 01 Apr 2025, 15:46
Last modified:11 May 2026, 21:09

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.03% LOW
0% probability -0.06%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Apr 2025, 15:46
Published
Vulnerability first disclosed
11 May 2026, 21:09
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 10%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • linux•linux

    ≥ 4c9f948142a550af416a2bfb5e56d29ce29e92cf, < 0c26edf477e093cefc41637f5bccc102e1a77399 | ≥ 4c9f948142a550af416a2bfb5e56d29ce29e92cf, < 39d086bb3558da9640ef335f97453e01d32578a1 | ≥ 4c9f948142a550af416a2bfb5e56d29ce29e92cf, < 9e438d0410a4002d24f420f2c28897ba2dc0af64 | ≥ 4c9f948142a550af416a2bfb5e56d29ce29e92cf, < 2809a79bc64964ce02e0c5f2d6bd39b9d09bdb3c | ≥ 4c9f948142a550af416a2bfb5e56d29ce29e92cf, < 6124cbf73e3dea7591857dd63b8ccece28952afd | ≥ 4c9f948142a550af416a2bfb5e56d29ce29e92cf, < 5b29891f91dfb8758baf1e2217bef4b16b2b165b | 5.12

  • linux•linux_kernel

    ≥ 5.12, < 5.15.180 | ≥ 5.16, < 6.1.132 | ≥ 6.2, < 6.6.84 | ≥ 6.7, < 6.12.20 | ≥ 6.13, < 6.13.8 | 6.14:rc1 | 6.14:rc2 | 6.14:rc3 | 6.14:rc4 | 6.14:rc5 | 6.14:rc6

References (7)