netdev - [PATCH] can: kvaser_usb: check number of channels returned by HW

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 12 Feb 2014 11:35:40 +0100
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, linux-can@...r.kernel.org,
	kernel@...gutronix.de, Olivier Sobrie <olivier@...rie.be>,
	linux-stable <stable@...r.kernel.org>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH] can: kvaser_usb: check number of channels returned by HW

From: Olivier Sobrie <olivier@...rie.be>

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@...rie.be>
Cc: linux-stable <stable@...r.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 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 6c859bb..e77d110 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;
 }
-- 
1.8.5.3

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html