[cwittich] 72653: [WIN32K] add missing parameter check in NtGdiArcInternal

Author: cwittich
Date: Sun Sep 11 09:01:04 2016
New Revision: 72653

URL: http://svn.reactos.org/svn/reactos?rev=72653&view=rev
Log:
[WIN32K] add missing parameter check in NtGdiArcInternal

Modified:
    trunk/reactos/win32ss/gdi/ntgdi/arc.c

Modified: trunk/reactos/win32ss/gdi/ntgdi/arc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/gdi/ntgdi/arc.c?re…
==============================================================================
--- trunk/reactos/win32ss/gdi/ntgdi/arc.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/gdi/ntgdi/arc.c	[iso-8859-1] Sun Sep 11 09:01:04 2016
@@ -376,6 +376,12 @@
     /* Yes, Windows really returns TRUE in this case */
     return TRUE;
   }
+  if (arctype > GdiTypePie)
+  {
+    DC_UnlockDc(dc);
+    EngSetLastError(ERROR_INVALID_PARAMETER);
+    return FALSE;
+  }
 
   DC_vPrepareDCsForBlit(dc, NULL, NULL, NULL);