netdev - [PATCH] mISDN: Read buffer overflow

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Message-ID: <4A72F51F.3000503@gmail.com>
Date:	Fri, 31 Jul 2009 15:43:59 +0200
From:	Roel Kluin <roel.kluin@...il.com>
To:	isdn@...ux-pingi.de, netdev <netdev@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] mISDN: Read buffer overflow

Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c
index c3b661a..7e5f30d 100644
--- a/drivers/isdn/mISDN/l1oip_core.c
+++ b/drivers/isdn/mISDN/l1oip_core.c
@@ -1480,7 +1480,7 @@ l1oip_init(void)
 		return -ENOMEM;
 
 	l1oip_cnt = 0;
-	while (type[l1oip_cnt] && l1oip_cnt < MAX_CARDS) {
+	while (l1oip_cnt < MAX_CARDS && type[l1oip_cnt]) {
 		switch (type[l1oip_cnt] & 0xff) {
 		case 1:
 			pri = 0;
--
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