wifi: ath12k: Pass ab pointer directly to ath12k_dp_tx_get_encap_type()

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Pass ab pointer directly to ath12k_dp_tx_get_encap_type() In ath12k_dp_tx_get_encap_type(), the arvif parameter is only used to retrieve the ab pointer. In vdev delete sequence the arvif->ar could become NULL and that would trigger kernel panic. Since the caller ath12k_dp_tx() already has a valid ab pointer, pass it directly to avoid panic and unnecessary dereferencing. PC points to "ath12k_dp_tx+0x228/0x988 [ath12k]" LR points to "ath12k_dp_tx+0xc8/0x988 [ath12k]". The Backtrace obtained is as follows: ath12k_dp_tx+0x228/0x988 [ath12k] ath12k_mac_tx_check_max_limit+0x608/0x920 [ath12k] ieee80211_process_measurement_req+0x320/0x348 [mac80211] ieee80211_tx_dequeue+0x9ac/0x1518 [mac80211] ieee80211_tx_dequeue+0xb14/0x1518 [mac80211] ieee80211_tx_prepare_skb+0x224/0x254 [mac80211] ieee80211_xmit+0xec/0x100 [mac80211] __ieee80211_subif_start_xmit+0xc50/0xf40 [mac80211] ieee80211_subif_start_xmit+0x2e8/0x308 [mac80211] netdev_start_xmit+0x150/0x18c dev_hard_start_xmit+0x74/0xc0 Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

Timeline

1. Aug 19, 2025, 5:03 PM UTCCVE published
2. Oct 21, 2026, 12:37 PM UTCRecord last updated

Affected versions

• Linux Linux

  From e93bbd65547ea8073b707c9034c3f051f8018614 · fixed in be27a11a42b2190f817b198bf5e753e5e4ac849e; From e93bbd65547ea8073b707c9034c3f051f8018614 · fixed in d9d2a0466e981d1be95fc8bdc05806ea21def758; From e93bbd65547ea8073b707c9034c3f051f8018614 · fixed in b508f370f88f277c95e2bd3bc47217a96d668cee; From e93bbd65547ea8073b707c9034c3f051f8018614 · fixed in ee4f8e7fa578f9f28cef5f409677db25f4f83d7e; From e93bbd65547ea8073b707c9034c3f051f8018614 · fixed in 05062834350f0bf7ad1abcebc2807220e90220eb

• Linux Linux

  6.4

• KernelLinux

  From 6.4.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.114; From 6.13.0 · fixed in 6.15.10; From 6.16.0 · fixed in 6.16.1

References 5