wifi: mac80211: fix use-after-free in chanctx code
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.247 by commit 9f1e5cc85ad77e52f54049a94db0407445ae2a34, it was introduced in version v3.17 by commit 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f. For more details please see the references link.