Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition

mainline inclusion
from mainline-v6.3-rc7
commit 73f7b171
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6UW68
CVE: CVE-2023-1989

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=73f7b171b7c09139eb3c6a5677c200dc1be5f318

---------------------------

In btsdio_probe, the data->work is bound with btsdio_work. It will be
started in btsdio_send_frame.

If the btsdio_remove runs with a unfinished work, there may be a race
condition that hdev is freed but used in btsdio_work. Fix it by
canceling the work before do cleanup in btsdio_remove.
Signed-off-by: NZheng Wang <zyytlz.wz@163.com>
Signed-off-by: NLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: NLiu Jian <liujian56@huawei.com>
Reviewed-by: NYue Haibing <yuehaibing@huawei.com>
Reviewed-by: NWang Weiyang <wangweiyang2@huawei.com>
Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>

drivers/bluetooth/btsdio.c

@@ -356,6 +356,7 @@ static void btsdio_remove(struct sdio_func *func)
 	if (!data)
 		return;
 
+	cancel_work_sync(&data->work);
 	hdev = data->hdev;
 
 	sdio_set_drvdata(func, NULL);