#VU106120 Improper locking in Linux kernel - CVE-2025-21889
Published: March 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106120
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-2025-21889
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 perf_event_exec() function in kernel/events/core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/0fe8813baf4b2e865d3b2c735ce1a15b86002c74
- https://git.kernel.org/stable/c/a2475ccad6120546ea45dbcd6cd1f74dc565ef6b
- https://git.kernel.org/stable/c/dd536566dda9a551fc2a2acfab5313a5bb13ed02
- https://git.kernel.org/stable/c/f390c2eea571945f357a2d3b9fcb1c015767132e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.81