linux-kernel - [PATCH 4/6] drivers/isdn/i4l/isdn_tty.c: fix check for array overindexing

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Date:	Wed, 10 Jun 2009 12:52:44 -0700
From:	Karsten Keil <keil@...systems.de>
To:	linux-kernel@...r.kernel.org
Cc:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
	i4ldeveloper@...tserv.isdn4linux.de
Subject: [PATCH 4/6] drivers/isdn/i4l/isdn_tty.c: fix check for array overindexing

From: Roel Kluin <roel.kluin@...il.com>

The check for overindexing of dev->mdm.info[] has an off-by-one.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Acked-by: Karsten Keil <keil@...systems.de>
---
 drivers/isdn/i4l/isdn_tty.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 1a2222c..b4d4522 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1592,7 +1592,7 @@ isdn_tty_open(struct tty_struct *tty, struct file *filp)
 	int retval, line;
 
 	line = tty->index;
-	if (line < 0 || line > ISDN_MAX_CHANNELS)
+	if (line < 0 || line >= ISDN_MAX_CHANNELS)
 		return -ENODEV;
 	info = &dev->mdm.info[line];
 	if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open"))
-- 
1.6.0.2

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