| From 862474f8b46f6c1e600d4934e40ba40646c696ec Mon Sep 17 00:00:00 2001 |
| From: Olivier Sobrie <olivier@sobrie.be> |
| Date: Tue, 11 Feb 2014 11:01:23 +0100 |
| Subject: can: kvaser_usb: check number of channels returned by HW |
| |
| From: Olivier Sobrie <olivier@sobrie.be> |
| |
| commit 862474f8b46f6c1e600d4934e40ba40646c696ec upstream. |
| |
| It is needed to check the number of channels returned by the HW because it |
| cannot be greater than MAX_NET_DEVICES otherwise it will crash. |
| |
| Signed-off-by: Olivier Sobrie <olivier@sobrie.be> |
| Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/net/can/usb/kvaser_usb.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/drivers/net/can/usb/kvaser_usb.c |
| +++ b/drivers/net/can/usb/kvaser_usb.c |
| @@ -474,6 +474,8 @@ static int kvaser_usb_get_card_info(stru |
| return err; |
| |
| dev->nchannels = msg.u.cardinfo.nchannels; |
| + if (dev->nchannels > MAX_NET_DEVICES) |
| + return -EINVAL; |
| |
| return 0; |
| } |
