In hantro_probe, vpu->watchdog_work is bound with hantro_watchdog function. In hantro_end_prepare_run, it will started by schedule_delayed_work. If there is an unfinished work in hantro_remove, there may be a race condition and trigger UAF bug. Signed-off-by: Ma Ke <make_ruc2021@xxxxxxx> --- drivers/media/platform/verisilicon/hantro_drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c index 423fc85d79ee..1a5b3a85c520 100644 --- a/drivers/media/platform/verisilicon/hantro_drv.c +++ b/drivers/media/platform/verisilicon/hantro_drv.c @@ -1187,6 +1187,7 @@ static void hantro_remove(struct platform_device *pdev) v4l2_info(&vpu->v4l2_dev, "Removing %s\n", pdev->name); + cancel_delayed_work_sync(&vpu->watchdog_work); media_device_unregister(&vpu->mdev); hantro_remove_dec_func(vpu); hantro_remove_enc_func(vpu); -- 2.37.2
