#VU120706 Use-after-free in Linux kernel - CVE-2023-54281
Published: December 30, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120706
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-2023-54281
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 btrfs_search_path_in_tree_user() function in fs/btrfs/ioctl.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/380bbd46d61c894a8dcaace09e54bc7426d81014
- https://git.kernel.org/stable/c/50e385d98b2a52480836ea41c142b81eeeb277af
- https://git.kernel.org/stable/c/6fdce81e425be112f1ca129776f4041afeaad413
- https://git.kernel.org/stable/c/7390bb377b5fb3be23cb021e0f184d1f576be7d6
- https://git.kernel.org/stable/c/ee34a82e890a7babb5585daf1a6dd7d4d1cf142a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.197
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.133
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.55
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6