From: Oliver Neukum oneukum@suse.com
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
--- drivers/media/usb/b2c2/flexcop-usb.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/media/usb/b2c2/flexcop-usb.c +++ b/drivers/media/usb/b2c2/flexcop-usb.c @@ -537,6 +537,9 @@ static int flexcop_usb_probe(struct usb_ 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;