CVE-2021-47091 Information

Description

In the Linux kernel the following vulnerability has been resolved:

mac80211: fix locking in ieee80211_start_ap error path

We need to hold the local->mtx to release the channel context as even encoded by the lockdep_assert_held() there. Fix it.

Reference

https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c