SB2024061355 - Improper locking in Linux kernel events
Published: June 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024061355
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-2021-46971)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the SYSCALL_DEFINE5() 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/b246759284d6a2bc5b6f1009caeeb3abce2ec9ff
- https://git.kernel.org/stable/c/4348d3b5027bc3ff6336368b6c60605d4ef8e1ce
- https://git.kernel.org/stable/c/f5809ca4c311b71bfaba6d13f4e39eab0557895e
- https://git.kernel.org/stable/c/c7b0208ee370b89d20486fae71cd9abb759819c1
- https://git.kernel.org/stable/c/08ef1af4de5fe7de9c6d69f1e22e51b66e385d9b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.35
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.117