Linux Kernel ath12k Peer Lookup Vulnerability in Monitor Mode

A vulnerability in the Linux kernel's ath12k wireless driver has been addressed, concerning peer lookup failures in monitor mode. When receiving frames, the peer ID was not correctly updated, causing the peer reference to be NULL. This omission prevented the proper population of link metadata, leading to a warning in the mac80211 subsystem when data frames with invalid link IDs were processed. The issue has been fixed by using the correct peer ID from the received frame's information, ensuring proper peer identification and link metadata updates.

Impact

The vulnerability could cause a NULL peer reference, leading to unpopulated link metadata and a warning in the mac80211 subsystem when processing data frames with invalid link IDs.