SB20251112122 - Input validation error in Linux kernel ext4
Published: November 12, 2025
Security Bulletin ID
SB20251112122
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2025-40167)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the __ext4_iget() function in fs/ext4/inode.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1437c95ab2a28b138d4521653583729f61ccb48b
- https://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b
- https://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717
- https://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5
- https://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3
- https://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23
- https://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34
- https://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217