CVE-2023-53257

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: check S1G action frame size

Before checking the action code, check that it even exists in the frame.

Exploitable by an RF-adjacent attacker via malformed 802.11ah (S1G) action frames. No local privileges required. Impact is limited to potential denial-of-service from a kernel crash. Not applicable where 802.11ah/S1G is not in use. Fixed starting from the Red Hat Enterprise Linux 9.4.

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.

To mitigate this issue, prevent module mac80211 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.