diff options
| author | Oliver Neukum <oneukum@suse.com> | 2019-07-30 09:48:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-28 18:26:19 +0100 |
| commit | 89660684ceca03bcaf5d1637709a4875e98387c6 (patch) | |
| tree | a4b4d599d2a7fb7b3fb55252ac8ab380bdde615b /drivers/media/usb/b2c2 | |
| parent | 71941ad643fd18ef59b00b745e6b9967feffaccb (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/b2c2')
| -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 0bd969063392..83d3a5cf272f 100644 --- a/drivers/media/usb/b2c2/flexcop-usb.c +++ b/drivers/media/usb/b2c2/flexcop-usb.c @@ -508,6 +508,9 @@ 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; |