[mjansen] 74062: [APPHELP] Fix a possible read past the buffer in SdbpIsPathOnRemovableMedia.

Author: mjansen
Date: Sat Mar  4 20:29:46 2017
New Revision: 74062

URL: http://svn.reactos.org/svn/reactos?rev=74062&view=rev
Log:
[APPHELP] Fix a possible read past the buffer in SdbpIsPathOnRemovableMedia.

Modified:
    trunk/reactos/dll/appcompat/apphelp/layer.c

Modified: trunk/reactos/dll/appcompat/apphelp/layer.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/appcompat/apphelp/laye…
==============================================================================
--- trunk/reactos/dll/appcompat/apphelp/layer.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/appcompat/apphelp/layer.c	[iso-8859-1] Sat Mar  4 20:29:46 2017
@@ -109,7 +109,7 @@
 {
     WCHAR tmp[] = { 'A',':','\\',0 };
     ULONG type;
-    if (!Path)
+    if (!Path || Path[0] == UNICODE_NULL)
     {
         SHIM_ERR("Invalid argument\n");
         return FALSE;