In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btsdio: fix use after free bug in btsdioremove due to race condition In btsdioprobe, the data->work is bound with btsdiowork. It will be started in btsdiosendframe. If the btsdioremove runs with a unfinished work, there may be a race condition that hdev is freed but used in btsdiowork. Fix it by canceling the work before do cleanup in btsdioremove.