#VU106112 Use-after-free in Linux kernel - CVE-2025-21867
Published: March 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106112
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21867
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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.
External links
- 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