SB2025100850 - Use-after-free in Linux kernel bpf
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB2025100850
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-53660)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __cpu_map_ring_cleanup() function in kernel/bpf/cpumap.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/7c62b75cd1a792e14b037fa4f61f9b18914e7de1
- https://git.kernel.org/stable/c/937345720d18f1ad006ba3d5dcb3fa121037b8a2
- https://git.kernel.org/stable/c/b58d34068fd9f96bfc7d389988dfaf9a92a8fe00
- https://git.kernel.org/stable/c/cbd000451885801e9bbfd9cf7a7946806a85cb5e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.45