#VU114495 Use-after-free in Linux kernel - CVE-2025-38659
Published: August 28, 2025
Vulnerability identifier: #VU114495
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-38659
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 repository.
External links
- 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