#VU118487 Improper locking in Linux kernel - CVE-2025-40201
Published: November 13, 2025
Vulnerability identifier: #VU118487
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-2025-40201
CWE-ID: CWE-667
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 locking within the SYSCALL_DEFINE4() function in kernel/sys.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/132f827e7bac7373e1522e89709d70b43cae5342
- https://git.kernel.org/stable/c/19b45c84bd9fd42fa97ff80c6350d604cb871c75
- https://git.kernel.org/stable/c/1bc0d9315ef5296abb2c9fd840336255850ded18
- https://git.kernel.org/stable/c/6796412decd2d8de8ec708213bbc958fab72f143
- https://git.kernel.org/stable/c/a15f37a40145c986cdf289a4b88390f35efdecc4