SB2025091906 - Memory leak in Linux kernel bpf
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091906
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-2023-53441)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the get_cpu_map_entry() and put_cpu_map_entry() functions in kernel/bpf/cpumap.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/4369016497319a9635702da010d02af1ebb1849d
- https://git.kernel.org/stable/c/a957ac8e0b5ffb5797382a6adbafd005a5f72851
- https://git.kernel.org/stable/c/b11a9b4f28cb6ff69ef7e69809e5f7fffeac9030
- https://git.kernel.org/stable/c/d26299f50f5ea8f0aeb5d49e659c31f64233c816
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.121