CVE-2024-43911

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.9.0

Description A NULL pointer dereference vulnerability was found in the Linux kernel's wifi module, specifically in the mac80211 subsystem. The issue occurs when starting a tx ba session in an MLD connection, where link data/link conf are dynamically allocated but do not point to vif->bss conf, resulting in a NULL chanreq. The code has been tweaked to check for ht supported/vht supported/has he/has eht on sta deflink to resolve the issue.

Recommendations To resolve this issue, update the Linux kernel to version 6.9.0 or later. If updating is not possible, consider disabling the wifi module or restricting its use until a patch is available.