CVE-2025-21812

A flaw was found in the Linux kernel's ax25 module. A local attacker with low privileges could exploit a locking issue, specifically a circular locking dependency, within the ax25_setsockopt() function. This could lead to a Use-After-Free (UAF) vulnerability, where the system attempts to use memory after it has been freed. Successful exploitation of this UAF could result in a denial of service or potentially lead to privilege escalation, allowing the attacker to gain higher system access.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.