SB2025032746 - Improper locking in Linux kernel events
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025032746
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) Improper locking (CVE-ID: CVE-2025-21889)
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.
References
- 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