In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop()

Since '__dev_queue_xmit()' should be called with interrupts enabled,
the following backtrace:

ieee80211_do_stop()
 ...
 spin_lock_irqsave(&local->queue_stop_reason_lock, flags)
 ...
 ieee80211_free_txskb()
  ieee80211_report_used_skb()
   ieee80211_report_ack_skb()
    cfg80211_mgmt_tx_status_ext()
     nl80211_frame_tx_status()
      genlmsg_multicast_netns()
       genlmsg_multicast_netns_filtered()
        nlmsg_multicast_filtered()
	 netlink_broadcast_filtered()
	  do_one_broadcast()
	   netlink_broadcast_deliver()
	    __netlink_sendskb()
	     netlink_deliver_tap()
	      __netlink_deliver_tap_skb()
	       dev_queue_xmit()
	        __dev_queue_xmit() ; with IRQS disabled
 ...
 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags)

issues the warning (as reported by syzbot reproducer):

WARNING: CPU: 2 PID: 5128 at kernel/softirq.c:362 __local_bh_enable_ip+0xc3/0x120

Fix this by implementing a two-phase skb reclamation in
'ieee80211_do_stop()', where actual work is performed
outside of a section with interrupts disabled.

kernel.org https://git.kernel.org/stable/c/058c9026ad79dc98572442fd4c7e9a36aba6f596 [No types assigned]

kernel.org https://git.kernel.org/stable/c/9d301de12da6e1bb069a9835c38359b8e8135121 [No types assigned]

kernel.org https://git.kernel.org/stable/c/acb53a716e492a02479345157c43f21edc8bc64b [No types assigned]

kernel.org https://git.kernel.org/stable/c/ad4b7068b101fbbb4a9ca4b99b25eb051a9482ec [No types assigned]

kernel.org https://git.kernel.org/stable/c/db5ca4b42ccfa42d2af7b335ff12578e57775c02 [No types assigned]

kernel.org https://git.kernel.org/stable/c/eab272972cffff9cd973b8e4055a8e81c64f7e6a [No types assigned]

kernel.org https://git.kernel.org/stable/c/f232916fab67ca1c3425926df4a866e59ff26908 [No types assigned]