#VU121507 Improper locking in Linux kernel - CVE-2025-71104
Published: January 14, 2026
Vulnerability identifier: #VU121507
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-2025-71104
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 advance_periodic_target_expiration() function in arch/x86/kvm/lapic.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/18ab3fc8e880791aa9f7c000261320fc812b5465
- https://git.kernel.org/stable/c/7b54ccef865e0aa62e4871d4ada2ba4b9dcb8bed
- https://git.kernel.org/stable/c/807dbe8f3862fa7c164155857550ce94b36a11b9
- https://git.kernel.org/stable/c/e23f46f1a971c73dad2fd63e1408696114ddebe2
- https://git.kernel.org/stable/c/e746e51947053a02af2ea964593dc4887108d379