SB2025122686 - Memory leak in Linux kernel bpf
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025122686
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2023-54033)
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 website.
References
- 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