Commit 1e9ac114 authored by Zheng Wang's avatar Zheng Wang Committed by Luiz Augusto von Dentz
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Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work 



In btsdio_probe, &data->work was bound with btsdio_work.In
btsdio_send_frame, it was started by schedule_work.

If we call btsdio_remove with an unfinished job, there may
be a race condition and cause UAF bug on hdev.

Fixes: ddbaf13e ("[Bluetooth] Add generic driver for Bluetooth SDIO devices")
Signed-off-by: default avatarZheng Wang <zyytlz.wz@163.com>
Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
parent 9aa9d947

drivers/bluetooth/btsdio.c

+1 −0
Original line number Diff line number Diff line
@@ -354,6 +354,7 @@ static void btsdio_remove(struct sdio_func *func) 


	BT_DBG("func %p", func);



	cancel_work_sync(&data->work);

	if (!data)

		return;