CVE-2023-53071 Information

Description

In the Linux kernel the following vulnerability has been resolved:

wifi: mt76: do not run mt76_unregister_device() on unregistered hw

Trying to probe a mt7921e pci card without firmware results in a successful probe where ieee80211_register_hw hasn’t been called. When removing the driver ieee802111_unregister_hw is called unconditionally leading to a kernel NULL pointer dereference. Fix the issue running mt76_unregister_device routine just for registered hw.

Reference

https://git.kernel.org/stable/c/2d34f27714c97a9786a30b3bb54944d6d8ed612f https://git.kernel.org/stable/c/41130c32f3a18fcc930316da17f3a5f3bc326aa1 https://git.kernel.org/stable/c/dffe86df26aee01a5fc56a175b7a7f157961e370