CVE-2025-21963

MEDIUM EPSS 6.1%
Published Apr 1, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 1, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
6.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.12  –  <5.15.180
linuxlinux_kernel*≥5.16  –  <6.1.132
linuxlinux_kernel*≥6.2  –  <6.6.84
linuxlinux_kernel*≥6.7  –  <6.12.20
linuxlinux_kernel*≥6.13  –  <6.13.8
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/0c26edf477e093cefc41637f5bccc102e1a77399
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2809a79bc64964ce02e0c5f2d6bd39b9d09bdb3c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/39d086bb3558da9640ef335f97453e01d32578a1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b29891f91dfb8758baf1e2217bef4b16b2b165b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6124cbf73e3dea7591857dd63b8ccece28952afd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e438d0410a4002d24f420f2c28897ba2dc0af64
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0c26edf477e093cefc41637f5bccc102e1a77399
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2809a79bc64964ce02e0c5f2d6bd39b9d09bdb3c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/39d086bb3558da9640ef335f97453e01d32578a1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5b29891f91dfb8758baf1e2217bef4b16b2b165b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6124cbf73e3dea7591857dd63b8ccece28952afd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9e438d0410a4002d24f420f2c28897ba2dc0af64
    Patch