SB2024053125 - Use-after-free in Linux kernel core seq
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024053125
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2021-47281)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the snd_seq_timer_open() function in sound/core/seq/seq_timer.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/bd7d88b0874f82f7b29d1a53e574cedaf23166ba
- https://git.kernel.org/stable/c/536a7646c00a0f14fee49e5e313109e5da2f6031
- https://git.kernel.org/stable/c/83e197a8414c0ba545e7e3916ce05f836f349273
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13