wifi: ath12k: Correct tid cleanup when tid setup fails
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: Correct tid cleanup when tid setup fails
Currently, if any error occurs during ath12k_dp_rx_peer_tid_setup(), the tid value is already incremented, even though the corresponding TID is not actually allocated. Proceed to ath12k_dp_rx_peer_tid_delete() starting from unallocated tid, which might leads to freeing unallocated TID and cause potential crash or out-of-bounds access.
Hence, fix by correctly decrementing tid before cleanup to match only the successfully allocated TIDs.
Also, remove tid-- from failure case of ath12k_dp_rx_peer_frag_setup(), as decrementing the tid before cleanup in loop will take care of this.
Compile tested only.
Affected products
2- Linux/Linuxv5Range: 6.3
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- git.kernel.org/stable/c/2ef17d1476ab26bce89764e2f16833d7f52acc38mitre
- git.kernel.org/stable/c/30cad87978057516c93467516bc481a3eacfd66amitre
- git.kernel.org/stable/c/4a2bf707270f897ab8077baee8ed5842a5321686mitre
- git.kernel.org/stable/c/6301fe4f209165334d251a1c6da8ae47f93cb32cmitre
- git.kernel.org/stable/c/907c630e58af9e86e215f3951c7b287bd86d0f15mitre
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