CVE-2024-56543
wifi: ath12k: Skip Rx TID cleanup for self peer
We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.
Please see our statement on Data Privacy.
wifi: ath12k: Skip Rx TID cleanup for self peer
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Skip Rx TID cleanup for self peer During peer create, dp setup for the peer is done where Rx TID is updated for all the TIDs. Peer object for self peer will not go through dp setup. When core halts, dp cleanup is done for all the peers. While cleanup, rx_tid::ab is accessed which causes below stack trace for self peer. WARNING: CPU: 6 PID: 12297 at drivers/net/wireless/ath/ath12k/dp_rx.c:851 Call Trace: __warn+0x7b/0x1a0 ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] report_bug+0x10b/0x200 handle_bug+0x3f/0x70 exc_invalid_op+0x13/0x60 asm_exc_invalid_op+0x16/0x20 ath12k_dp_rx_frags_cleanup+0xd2/0xe0 [ath12k] ath12k_dp_rx_frags_cleanup+0xca/0xe0 [ath12k] ath12k_dp_rx_peer_tid_cleanup+0x39/0xa0 [ath12k] ath12k_mac_peer_cleanup_all+0x61/0x100 [ath12k] ath12k_core_halt+0x3b/0x100 [ath12k] ath12k_core_reset+0x494/0x4c0 [ath12k] sta object in peer will be updated when remote peer is created. Hence use peer::sta to detect the self peer and skip the cleanup. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Reserved 2024-12-27 | Published 2024-12-27 | Updated 2025-01-20 | Assigner Linuxgit.kernel.org/...c/d73da0dd2853887b7aab71f0d572fd3314dafafe
git.kernel.org/...c/a1e2d6738b29c74c2024eb23167dfff68aadd984
git.kernel.org/...c/a052483d495a4dc62c814f2fd17d0ceb308fc6a6
git.kernel.org/...c/1a0c640ce1cdcde3eb131a0c1e70ca1ed7cf27cb
Support options
