SB2025100862 - Use-after-free in Linux kernel dlm
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB2025100862
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-2022-50516)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the send_args() function in fs/dlm/lock.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1ab6d3030652b5de0015176a5b0ad9df9b847514
- https://git.kernel.org/stable/c/57c1cfb5781068e5d3632bc6e5f74a8fcc4f1a30
- https://git.kernel.org/stable/c/7175e131ebba47afef47e6ac4d5bab474d1e6e49
- https://git.kernel.org/stable/c/ea7be82fd7e1f5de72208bce93fbbe6de6c13dec
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.76