android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work

Browse Source 
[ Upstream commit 1e9ac114c4428fdb7ff4635b45d4f46017e8916f ]

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: ddbaf13e36 ("[Bluetooth] Add generic driver for Bluetooth SDIO devices")
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zheng Wang 2023-03-09 16:07:39 +08:00 committed by Greg Kroah-Hartman
parent fce0e47e9e
commit da3d3fdfb4
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/bluetooth/btsdio.c
View File

@ -352,6 +352,7 @@ static void btsdio_remove(struct sdio_func *func)
BT_DBG("func %p", func);
cancel_work_sync(&data->work);
if (!data)
return;