SB2025082844 - Use-after-free in Linux kernel gfs2
Published: August 28, 2025
Security Bulletin ID
SB2025082844
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-2025-38659)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the signal_our_withdraw() function in fs/gfs2/util.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1a91ba12abef628b43cada87478328274d988e88
- https://git.kernel.org/stable/c/6784367b2f3cd7b89103de35764f37f152590dbd
- https://git.kernel.org/stable/c/97c94c7dbddc34d353c83b541b3decabf98d04af
- https://git.kernel.org/stable/c/deb016c1669002e48c431d6fd32ea1c20ef41756
- https://git.kernel.org/stable/c/f5426ffbec971a8f7346a57392d3a901bdee5a9b