CVE-2025-39750
wifi: ath12k: Correct tid cleanup when tid setup fails
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.
Productos afectados
Linux · Linux¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://git.kernel.org/stable/c/2ef17d1476ab26bce89764e2f16833d7f52acc38https://git.kernel.org/stable/c/30cad87978057516c93467516bc481a3eacfd66ahttps://git.kernel.org/stable/c/4a2bf707270f897ab8077baee8ed5842a5321686https://git.kernel.org/stable/c/6301fe4f209165334d251a1c6da8ae47f93cb32chttps://git.kernel.org/stable/c/907c630e58af9e86e215f3951c7b287bd86d0f15