6.6-stable review patch. If anyone has any objections, please let me know.
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From: Karthikeyan Kathirvel quic_kathirve@quicinc.com
[ Upstream commit 7c0884fcd2ddde0544d2e77f297ae461e1f53f58 ]
Currently, TID is not decremented before peer cleanup, during error handling path of ath12k_dp_rx_peer_frag_setup(). This could lead to out-of-bounds access in peer->rx_tid[].
Hence, add a decrement operation for TID, before peer cleanup to ensures proper cleanup and prevents out-of-bounds access issues when the RX peer frag setup fails.
Found during code review. Compile tested only.
Signed-off-by: Karthikeyan Kathirvel quic_kathirve@quicinc.com Signed-off-by: Sarika Sharma quic_sarishar@quicinc.com Reviewed-by: Vasanthakumar Thiagarajan vasanthakumar.thiagarajan@oss.qualcomm.com Link: https://patch.msgid.link/20250526034713.712592-1-quic_sarishar@quicinc.com Signed-off-by: Jeff Johnson jeff.johnson@oss.qualcomm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath12k/dp.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/ath/ath12k/dp.c b/drivers/net/wireless/ath/ath12k/dp.c index c8777ee2079f..c918f5d12975 100644 --- a/drivers/net/wireless/ath/ath12k/dp.c +++ b/drivers/net/wireless/ath/ath12k/dp.c @@ -74,6 +74,7 @@ int ath12k_dp_peer_setup(struct ath12k *ar, int vdev_id, const u8 *addr) ret = ath12k_dp_rx_peer_frag_setup(ar, addr, vdev_id); if (ret) { ath12k_warn(ab, "failed to setup rx defrag context\n"); + tid--; goto peer_clean; }