#VU120347 Memory leak in Linux kernel - CVE-2023-54033
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120347
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-54033
CWE-ID: CWE-401
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 perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the htab_lru_map_update_elem() and __htab_lru_percpu_map_update_elem() functions in kernel/bpf/hashtab.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/1a9e80f757bbb1562d82e350afce2bb2f712cc3d
- https://git.kernel.org/stable/c/79ea1a12fb9a8275b6e19d4ca625dd872dedcbb9
- https://git.kernel.org/stable/c/965e9cccbe6b9c7b379908cebcb5e3a47f20dd5e
- https://git.kernel.org/stable/c/b34ffb0c6d23583830f9327864b9c1f486003305
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.115
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.31
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4