SB20250619164 - Use-after-free in Linux kernel nfs
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619164
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-2022-50072)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the _nfs4_open_and_get_state() function in fs/nfs/nfs4proc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0fffb46ff3d5ed4668aca96441ec7a25b793bd6f
- https://git.kernel.org/stable/c/2135e5d56278ffdb1c2e6d325dc6b87f669b9dac
- https://git.kernel.org/stable/c/76ffd2042438769298f34b76102b40dea89de616
- https://git.kernel.org/stable/c/a4cf3dadd1fa43609f7c6570c9116b0e0a9923d1
- https://git.kernel.org/stable/c/b03d1117e9be7c7da60e466eaf9beed85c5916c8
- https://git.kernel.org/stable/c/f7ee3b772d9de87387a725caa04bc041ac7fe5ec
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.211