From: Matteo Semenzato <mattew8898@gmail.com>
Date: Wed, 11 Mar 2015 13:31:14 +0000 (+0100)
Subject: Staging: rtl8712: fix potential null pointer dereference
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=66faa441a6f5753dd3e7add3e1640819ba9ec1c2;p=openwrt%2Fstaging%2Fblogic.git

Staging: rtl8712: fix potential null pointer dereference

Check if kmalloc succeded before using the pointer in memcpy.

Signed-off-by: Matteo Semenzato <mattew8898@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rtl8712/rtl871x_mlme.c b/drivers/staging/rtl8712/rtl871x_mlme.c
index 9b13de1437a1..fb2b195b90af 100644
--- a/drivers/staging/rtl8712/rtl871x_mlme.c
+++ b/drivers/staging/rtl8712/rtl871x_mlme.c
@@ -725,6 +725,8 @@ void r8712_joinbss_event_callback(struct _adapter *adapter, u8 *pbuf)
 
 	if (sizeof(struct list_head) == 4 * sizeof(u32)) {
 		pnetwork = kmalloc(sizeof(struct wlan_network), GFP_ATOMIC);
+		if (!pnetwork)
+			return;
 		memcpy((u8 *)pnetwork+16, (u8 *)pbuf + 8,
 			sizeof(struct wlan_network) - 16);
 	} else