From: Maurizio Lombardi <mlombard@redhat.com>
Date: Wed, 5 Feb 2014 15:46:56 +0000 (+0100)
Subject: wlags49_h2: Fix overflow in wireless_set_essid()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6b89db36b3ab7c4b99027873e1de4be8d07387d4;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/wlags49_h2/wl_wext.c b/drivers/staging/wlags49_h2/wl_wext.c
index 4a1ddaf5e00f..187fc060de26 100644
--- a/drivers/staging/wlags49_h2/wl_wext.c
+++ b/drivers/staging/wlags49_h2/wl_wext.c
@@ -1061,7 +1061,7 @@ 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;
 	}