From: Pavel Skripkin paskripkin@gmail.com
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 --- drivers/media/usb/stkwebcam/stk-webcam.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -1362,7 +1362,7 @@ static int stk_camera_probe(struct usb_i if (!dev->isoc_ep) { STK_ERROR("Could not find isoc-in endpoint"); err = -ENODEV; - goto error; + goto error_put; } dev->vsettings.palette = V4L2_PIX_FMT_RGB565; dev->vsettings.mode = MODE_VGA; @@ -1375,10 +1375,12 @@ static int stk_camera_probe(struct usb_i
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);