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.
git.kernel.org/linus/87a270625a89fc841f1a7e21aae6176543d8385c (5.16-rc7)
git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c
git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79
git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f
launchpad.net/bugs/cve/CVE-2021-47091
nvd.nist.gov/vuln/detail/CVE-2021-47091
security-tracker.debian.org/tracker/CVE-2021-47091
www.cve.org/CVERecord?id=CVE-2021-47091