From: Pavel Skripkin <paskripkin@gmail.com> stable inclusion from linux-4.19.207 commit 4a3217bba039330f5c489245923f989b43bd94d1 -------------------------------- commit 514e97674400462cc09c459a1ddfb9bf39017223 upstream. My local syzbot instance hit memory leak in usb_set_configuration(). The problem was in unputted usb interface. In case of errors after usb_get_intf() the reference should be putted to correclty free memory allocated for this interface. Fixes: ec16dae5453e ("V4L/DVB (7019): V4L: add support for Syntek DC1125 webcams") Cc: stable@vger.kernel.org Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/media/usb/stkwebcam/stk-webcam.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index e33fa78ef98dd..f46db1b6a27c4 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -1355,7 +1355,7 @@ static int stk_camera_probe(struct usb_interface *interface, if (!dev->isoc_ep) { pr_err("Could not find isoc-in endpoint\n"); err = -ENODEV; - goto error; + goto error_put; } dev->vsettings.palette = V4L2_PIX_FMT_RGB565; dev->vsettings.mode = MODE_VGA; @@ -1368,10 +1368,12 @@ static int stk_camera_probe(struct usb_interface *interface, err = stk_register_video_device(dev); if (err) - goto error; + goto error_put; return 0; +error_put: + usb_put_intf(interface); error: v4l2_ctrl_handler_free(hdl); v4l2_device_unregister(&dev->v4l2_dev); -- 2.25.1