SB2025032738 - Use-after-free in Linux kernel bpf
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025032738
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-2025-21867)
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_test_init() function in net/bpf/test_run.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1a9e1284e87d59b1303b69d1808d310821d6e5f7
- https://git.kernel.org/stable/c/6b3d638ca897e099fa99bd6d02189d3176f80a47
- https://git.kernel.org/stable/c/972bafed67ca73ad9a56448384281eb5fd5c0ba3
- https://git.kernel.org/stable/c/d56d8a23d95100b65f40438639dd82db2af81c11
- https://git.kernel.org/stable/c/f615fccfc689cb48977d275ac2e391297b52392b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.130