From: Johan Hovold johan@kernel.org
commit ed9ed5a89acba51b82bdff61144d4e4a4245ec8a upstream.
Add missing endpoint-type sanity checks to probe.
This specifically prevents a warning in USB core on URB submission when fuzzing USB descriptors.
Signed-off-by: Johan Hovold johan@kernel.org Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20191202085610.12719-4-johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/isdn/gigaset/usb-gigaset.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
--- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -708,6 +708,12 @@ static int gigaset_probe(struct usb_inte
endpoint = &hostif->endpoint[0].desc;
+ if (!usb_endpoint_is_bulk_out(endpoint)) { + dev_err(&interface->dev, "missing bulk-out endpoint\n"); + retval = -ENODEV; + goto error; + } + buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); ucs->bulk_out_size = buffer_size; ucs->bulk_out_epnum = usb_endpoint_num(endpoint); @@ -727,6 +733,12 @@ static int gigaset_probe(struct usb_inte
endpoint = &hostif->endpoint[1].desc;
+ if (!usb_endpoint_is_int_in(endpoint)) { + dev_err(&interface->dev, "missing int-in endpoint\n"); + retval = -ENODEV; + goto error; + } + ucs->busy = 0;
ucs->read_urb = usb_alloc_urb(0, GFP_KERNEL);