[kernel,v1,0/1] Clear workqueue to avoid use-after-free

Message

Zhengping Jiang Feb. 22, 2023, 12:09 a.m. UTC

After the hci_sync rework, cmd_sync_work was cleared when calling
hci_unregister_dev, but not when powering off the adapter.
Use-after-free errors happened because a work is still scheduled
when cmd is freed by __mgmt_power_off.

Changes in v1:
- Clear cmd_sync_work queue before clearing the mgmt cmd list

Zhengping Jiang (1):
  Bluetooth: hci_sync: clear workqueue before clear mgmt cmd

 net/bluetooth/hci_sync.c | 2 ++
 1 file changed, 2 insertions(+)