wifi: ath12k: Correct tid cleanup when tid setup fails

Summary

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.

Timeline

1. Sep 11, 2025, 4:52 PM UTCCVE published
2. Oct 15, 2026, 9:53 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 15, 2026, 10:02 PM UTCRecord last updated

Affected versions

• Linux Linux

  From d889913205cf7ebda905b1e62c5867ed4e39f6c2 · fixed in 30cad87978057516c93467516bc481a3eacfd66a; From d889913205cf7ebda905b1e62c5867ed4e39f6c2 · fixed in 2ef17d1476ab26bce89764e2f16833d7f52acc38; From d889913205cf7ebda905b1e62c5867ed4e39f6c2 · fixed in 907c630e58af9e86e215f3951c7b287bd86d0f15; From d889913205cf7ebda905b1e62c5867ed4e39f6c2 · fixed in 6301fe4f209165334d251a1c6da8ae47f93cb32c; From d889913205cf7ebda905b1e62c5867ed4e39f6c2 · fixed in 4a2bf707270f897ab8077baee8ed5842a5321686

• Linux Linux

  6.3

• KernelLinux

  From 6.3.0 · fixed in 6.6.103; From 6.7.0 · fixed in 6.12.43; From 6.13.0 · fixed in 6.15.11; From 6.16.0 · fixed in 6.16.2

References 5