SB20240603107 - Improper locking in Linux kernel trace
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240603107
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-2021-46939)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the trace_clock_global() function in kernel/trace/trace_clock.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/91ca6f6a91f679c8645d7f3307e03ce86ad518c4
- https://git.kernel.org/stable/c/859b47a43f5a0e5b9a92b621dc6ceaad39fb5c8b
- https://git.kernel.org/stable/c/1fca00920327be96f3318224f502e4d5460f9545
- https://git.kernel.org/stable/c/d43d56dbf452ccecc1ec735cd4b6840118005d7c
- https://git.kernel.org/stable/c/c64da3294a7d59a4bf6874c664c13be892f15f44
- https://git.kernel.org/stable/c/a33614d52e97fc8077eb0b292189ca7d964cc534
- https://git.kernel.org/stable/c/6e2418576228eeb12e7ba82edb8f9500623942ff
- https://git.kernel.org/stable/c/2a1bd74b8186d7938bf004f5603f25b84785f63e
- https://git.kernel.org/stable/c/aafe104aa9096827a429bc1358f8260ee565b7cc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.233
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.191
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.269
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.269
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.118