SB20250916117 - Use-after-free in Linux kernel btrfs
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916117
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-2022-50300)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the read_one_chunk() function in fs/btrfs/volumes.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/169a4cf46882974d4db6d85eb623ec898e51bbc0
- https://git.kernel.org/stable/c/1742e1c90c3da344f3bb9b1f1309b3f47482756a
- https://git.kernel.org/stable/c/b8e7ed42bc3ca0d0e4191ee394d34962d3624c22
- https://git.kernel.org/stable/c/fce3713197ebba239e1c7e02174ed216ea1ee014
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.18