SB2025031250 - Use-after-free in Linux kernel bpf
Published: March 12, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025031250
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-2025-21853)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the bpf_map_mmap() function in kernel/bpf/syscall.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/271e49f8a58edba65bc2b1250a0abaa98c4bfdbe
- https://git.kernel.org/stable/c/29cfda62ab4d92ab94123813db49ab76c1e61b29
- https://git.kernel.org/stable/c/bc27c52eea189e8f7492d40739b7746d67b65beb
- https://git.kernel.org/stable/c/d95607a5f2f9bb08194c9deaf4a5f3e8ba59a9d4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17