CVE-2025-39864

A use after free vulnerbility exists in the linux kernel wifi module in the cmp_bss() function,an attacker could create a crafted payload to trigger, leading to damage availability and integrity of the system

A use-after-free issue was discovered in the cfg80211 subsystem, caused by freeing beacon_ies structures even when they were still referenced through hidden_beacon_bss. Exploitation requires local access with capabilities to manage Wi-Fi interfaces (e.g., via nl80211) and is unlikely under normal conditions. The vulnerability could theoretically lead to kernel memory corruption or privilege escalation, though the trigger is complex.

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.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.