File ImageMagick-CVE-2017-13133.patch of Package ImageMagick.8212

Index: ImageMagick-6.8.8-1/coders/xcf.c
===================================================================
--- ImageMagick-6.8.8-1.orig/coders/xcf.c	2017-10-23 14:42:50.032369919 +0200
+++ ImageMagick-6.8.8-1/coders/xcf.c	2017-10-23 14:43:07.984682340 +0200
@@ -670,6 +670,9 @@ static MagickBooleanType load_level(Imag
     if (offset2 == 0)
       offset2=(MagickOffsetType) (offset + TILE_WIDTH * TILE_WIDTH * 4* 1.5);
     /* seek to the tile offset */
+    if (offset2 > GetBlobSize(image))
+      ThrowBinaryException(CorruptImageError,"InsufficientImageDataInFile",
+        image->filename);
     offset=SeekBlob(image, offset, SEEK_SET);
 
       /* allocate the image for the tile