wifi: ath11k: fix sleeping-in-atomic in ath11k_mac_op_set_bitrate_mask()

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix sleeping-in-atomic in ath11k_mac_op_set_bitrate_mask() ath11k_mac_disable_peer_fixed_rate() is passed as the iterator to ieee80211_iterate_stations_atomic(). Note in this case the iterator is required to be atomic, however ath11k_mac_disable_peer_fixed_rate() does not follow it as it might sleep. Consequently below warning is seen: BUG: sleeping function called from invalid context at wmi.c:304 Call Trace: <TASK> dump_stack_lvl __might_resched.cold ath11k_wmi_cmd_send ath11k_wmi_set_peer_param ath11k_mac_disable_peer_fixed_rate ieee80211_iterate_stations_atomic ath11k_mac_op_set_bitrate_mask.cold Change to ieee80211_iterate_stations_mtx() to fix this issue. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30

Timeline

1. Sep 7, 2025, 3:16 PM UTCCVE published
2. Oct 15, 2026, 9:53 PM UTCCISA SSVC assessment

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

3. Oct 21, 2026, 12:37 PM UTCRecord last updated

Affected versions

• Linux Linux

  From d5c65159f2895379e11ca13f62feabe93278985d · fixed in 1f45a710c82b29d4c501b1cb472dff68d59ecc8c; From d5c65159f2895379e11ca13f62feabe93278985d · fixed in 9c0e3144924c7db701575a73af341d33184afeaf; From d5c65159f2895379e11ca13f62feabe93278985d · fixed in 7d4d0db0dc9424de2bdc0b45e919e4892603356f; From d5c65159f2895379e11ca13f62feabe93278985d · fixed in 6bdef22d540258ca06f079f7b6ae100669a19b47; From d5c65159f2895379e11ca13f62feabe93278985d · fixed in 65c12b104cb942d588a1a093acc4537fb3d3b129

• Linux Linux

  5.6

• KernelLinux

  From 5.6.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.42; From 6.13.0 · fixed in 6.15.10; From 6.16.0 · fixed in 6.16.1

References 5