linux-kernel - [PATCH v2] wlags49_h2: Fix overflow in wireless_set

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Message-Id: <1385544609-4682-1-git-send-email-mlombard@redhat.com>
Date:	Wed, 27 Nov 2013 10:30:09 +0100
From:	Maurizio Lombardi <mlombard@...hat.com>
To:	pe1dnn@...at.org
Cc:	linux-kernel@...r.kernel.org,
	Maurizio Lombardi <mlombard@...hat.com>
Subject: [PATCH v2] wlags49_h2: Fix overflow in wireless_set_essid()

This patch prevents the wireless_set_essid() function from overwriting
the last byte of the NetworkName buffer which must be NULL.

Signed-off-by: Maurizio Lombardi <mlombard@...hat.com>
---
 drivers/staging/wlags49_h2/wl_wext.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/wlags49_h2/wl_wext.c b/drivers/staging/wlags49_h2/wl_wext.c
index c731ff2..62ad158 100644
--- a/drivers/staging/wlags49_h2/wl_wext.c
+++ b/drivers/staging/wlags49_h2/wl_wext.c
@@ -1127,7 +1127,7 @@ static int wireless_set_essid(struct net_device *dev, struct iw_request_info *in
 		goto out;
 	}
 
-	if (data->flags != 0 && data->length > HCF_MAX_NAME_LEN + 1) {
+	if (data->flags != 0 && data->length > HCF_MAX_NAME_LEN) {
 		ret = -EINVAL;
 		goto out;
 	}
-- 
1.8.3.1

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