From 3091828c8f4b4a01cbec6025128bf77e6e7b9f97 Mon Sep 17 00:00:00 2001
From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Fri, 15 May 2015 15:20:51 -0500
Subject: [PATCH] rtl8188eu: On kernel 2.6.32, a NULL dereference was found

This bug was reported and debugged by GitHub user jdowells.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
---
 os_dep/ioctl_linux.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/os_dep/ioctl_linux.c b/os_dep/ioctl_linux.c
index 0f08efc..17ab9c7 100644
--- a/os_dep/ioctl_linux.c
+++ b/os_dep/ioctl_linux.c
@@ -7859,6 +7859,8 @@ static int rtw_ioctl_wext_private(struct net_device *dev, union iwreq_data *wrq_
 	memcpy(&wdata, wrq_data, sizeof(wdata));
 
 	input_len = wdata.data.length;
+	if (input_len == 0)
+		return -EFAULT;
 	input = rtw_zmalloc(input_len);
 	if (NULL == input)
 		return -ENOMEM;