linux-kernel - [PATCH] staging: rtl8188eu: core: rtw_wlan

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Date:	Mon, 26 Jan 2015 16:39:14 +0100
From:	Kumar Amit Mehta <gmate.amit@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	navin.patidar@...il.com, Larry.Finger@...inger.net,
	dan.carpenter@...cle.com, tapaswenipathak@...il.com,
	abelmoyo.ab@...il.com, devel@...verdev.osuosl.org,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: rtl8188eu: core: rtw_wlan_util.c: Fix for NULL dereference

In rtw_check_bcn_info(), check the return value of kzalloc() before
dereferencing it, to avoid NULL pointer dereference.

Signed-off-by: Kumar Amit Mehta <gmate.amit@...il.com>
---
 drivers/staging/rtl8188eu/core/rtw_wlan_util.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
index 3e9b6e9..a3ffc69 100644
--- a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
+++ b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
@@ -931,6 +931,8 @@ int rtw_check_bcn_info(struct adapter  *Adapter, u8 *pframe, u32 packet_len)
 	}
 
 	bssid = kzalloc(sizeof(struct wlan_bssid_ex), GFP_ATOMIC);
+	if (!bssid)
+		return _FAIL;
 
 	subtype = GetFrameSubType(pframe) >> 4;
 
-- 
2.1.0

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