CVE-2023-53113 Information

Description

In the Linux kernel the following vulnerability has been resolved:

wifi: nl80211: fix NULL-ptr deref in offchan check

If e.g. in AP mode the link was already created by userspace but not activated yet it has a chandef but the chandef isn’t valid and has no channel. Check for this and ignore this link.

Reference

https://git.kernel.org/stable/c/201a836c2385fdd2b9d0a8e7737bba5b26f1863a https://git.kernel.org/stable/c/87e80ea4fbc9ce2f2005905fdbcd38baaa47463a https://git.kernel.org/stable/c/f624bb6fad23df3270580b4fcef415c6e7bf7705