From 862474f8b46f6c1e600d4934e40ba40646c696ec Mon Sep 17 00:00:00 2001 From: Olivier Sobrie Date: Tue, 11 Feb 2014 11:01:23 +0100 Subject: [PATCH] can: kvaser_usb: check number of channels returned by HW 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 Cc: linux-stable Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/kvaser_usb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index 6c859bba8b65..e77d11049747 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -473,6 +473,8 @@ static int kvaser_usb_get_card_info(struct kvaser_usb *dev) return err; dev->nchannels = msg.u.cardinfo.nchannels; + if (dev->nchannels > MAX_NET_DEVICES) + return -EINVAL; return 0; }