CVE-2025-22039

HIGH EPSS 15.3%
Published Apr 16, 20251y ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
High
Find Similar
Published Apr 16, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access to the DACL.

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-125 Out-of-bounds Read Memory Safety
CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.12.23
linuxlinux_kernel*≥6.13  –  <6.13.11
linuxlinux_kernel*≥6.14  –  <6.14.2

References 4

  • git.kernel.org https://git.kernel.org/stable/c/443b373a4df5a2cb9f7b8c4658b2afedeb16397f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b8d379048b168a0dff5ab1acb975b933f368514
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/443b373a4df5a2cb9f7b8c4658b2afedeb16397f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b8d379048b168a0dff5ab1acb975b933f368514
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42
    Patch