File GraphicsMagick-CVE-2017-15277.patch of Package GraphicsMagick.7782

From 9fd10cf630832b36a588c1545d8736539b2f1fb5 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Fri, 21 Jul 2017 07:54:50 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/592

---
 coders/gif.c | 2 ++
 1 file changed, 2 insertions(+)

Index: GraphicsMagick-1.3.25/coders/gif.c
===================================================================
--- GraphicsMagick-1.3.25.orig/coders/gif.c	2015-10-04 21:35:31.000000000 +0200
+++ GraphicsMagick-1.3.25/coders/gif.c	2017-12-11 14:40:46.463535732 +0100
@@ -885,6 +885,7 @@ static Image *ReadGIFImage(const ImageIn
   global_colormap=MagickAllocateArray(unsigned char *,3,Max(global_colors,256));
   if (global_colormap == (unsigned char *) NULL)
     ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
+  (void) memset(global_colormap,0,3*Max(global_colors,256)*sizeof(*global_colormap));
   if (BitSet(flag,0x80))
     (void) ReadBlob(image,3*global_colors,(char *) global_colormap);
   delay=0;