diff options
| author | Zheng Wang <zyytlz.wz@163.com> | 2023-03-09 16:07:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-30 12:51:23 +0200 |
| commit | c59c65a14e8f7d738429648833f3bb3f9df0513f (patch) | |
| tree | 83f85c1be74c561692d80a27f9492b8eb5c008d4 /drivers/bluetooth | |
| parent | 81a27397cd2a99b36afa9f812261efa5f3cae951 (diff) | |
Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work
[ 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: ddbaf13e3609 ("[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>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btsdio.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c index 795be33f2892..02893600db39 100644 --- a/drivers/bluetooth/btsdio.c +++ b/drivers/bluetooth/btsdio.c @@ -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; |