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

Bluetooth: MGMT: Fix possible crash on mgmt_index_removed

If mgmt_index_removed is called while there are commands queued on
cmd_sync it could lead to crashes like the bellow trace:

0x0000053D: __list_del_entry_valid_or_report+0x98/0xdc
0x0000053D: mgmt_pending_remove+0x18/0x58 [bluetooth]
0x0000053E: mgmt_remove_adv_monitor_complete+0x80/0x108 [bluetooth]
0x0000053E: hci_cmd_sync_work+0xbc/0x164 [bluetooth]

So while handling mgmt_index_removed this attempts to dequeue
commands passed as user_data to cmd_sync.

kernel.org https://git.kernel.org/stable/c/0cc47233af35fb5f10b5e6a027cb4ccd480caf9a [No types assigned]

kernel.org https://git.kernel.org/stable/c/4883296505aa7e4863c6869b689afb6005633b23 [No types assigned]

kernel.org https://git.kernel.org/stable/c/8c3f7943a29145d8a2d8e24893762f7673323eae [No types assigned]

kernel.org https://git.kernel.org/stable/c/f53e1c9c726d83092167f2226f32bd3b73f26c21 [No types assigned]