#VU118420 Input validation error in Linux kernel - CVE-2025-40167
Published: November 12, 2025
Vulnerability identifier: #VU118420
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-40167
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 repository.
External links
- 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