diff options
| author | Oliver Neukum <oneukum@suse.com> | 2019-07-30 09:48:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-01 09:14:27 +0100 |
| commit | 9a611c200ee2777bb3551ee1d979bf923b93653a (patch) | |
| tree | 662422d1baa8f2d35569226fe095facf14874cff /drivers/media/usb | |
| parent | a96430cca803da3b353ede3231692eea22d86715 (diff) | |
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>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/b2c2/flexcop-usb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/usb/b2c2/flexcop-usb.c b/drivers/media/usb/b2c2/flexcop-usb.c index a8f3169e30b3..ac4fddfd0a43 100644 --- 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_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; |