From 63df1025470b476e33dd6774c06951127d5b5a4a Mon Sep 17 00:00:00 2001
From: Christoph von Wittich <christoph_vw@reactos.org>
Date: Sun, 11 Sep 2016 09:01:04 +0000
Subject: [PATCH] [WIN32K] add missing parameter check in NtGdiArcInternal

svn path=/trunk/; revision=72653
---
 reactos/win32ss/gdi/ntgdi/arc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/reactos/win32ss/gdi/ntgdi/arc.c b/reactos/win32ss/gdi/ntgdi/arc.c
index 16e63e55adf..c60fadfd5da 100644
--- a/reactos/win32ss/gdi/ntgdi/arc.c
+++ b/reactos/win32ss/gdi/ntgdi/arc.c
@@ -376,6 +376,12 @@ NtGdiArcInternal(
     /* 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);