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Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work
authorZheng Wang <zyytlz.wz@163.com>
Thu, 9 Mar 2023 08:07:39 +0000 (16:07 +0800)
committerLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Thu, 23 Mar 2023 20:09:38 +0000 (13:09 -0700)
commit1e9ac114c4428fdb7ff4635b45d4f46017e8916f
tree24786f57e784961107ac608807a0c7ecbb942af4tree | snapshot
parent9aa9d9473f1550d1936c31259720b3f1f4690576commit | diff
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: 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>
drivers/bluetooth/btsdio.c diff | blob | history
Domain: System / Kernel;