Commit 8b42c263 authored Jul 30, 2019 by Oliver Neukum Committed by Greg Kroah-Hartman Dec 01, 2019

media: b2c2-flexcop-usb: add sanity checking



commit 1b976fc6d684e3282914cdbe7a8d68fdce19095c upstream.

The driver needs an isochronous endpoint to be present. It will
oops in its absence. Add checking for it.

Reported-by:  <syzbot+d93dff37e6a89431c158@syzkaller.appspotmail.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 56be9f1b

drivers/media/usb/b2c2/flexcop-usb.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -537,6 +537,9 @@ static int flexcop_usb_probe(struct usb_interface *intf,
		struct flexcop_device *fc = NULL;
		int ret;

		if (intf->cur_altsetting->desc.bNumEndpoints < 1)
		return -ENODEV;

		if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
		err("out of memory\n");
		return -ENOMEM;