File ImageMagick-CVE-2017-12805.patch of Package ImageMagick.12053

Index: ImageMagick-6.8.8-1/coders/tiff.c
===================================================================
--- ImageMagick-6.8.8-1.orig/coders/tiff.c	2019-05-17 10:23:06.160794783 +0200
+++ ImageMagick-6.8.8-1/coders/tiff.c	2019-05-17 10:24:43.965281913 +0200
@@ -1405,26 +1405,26 @@ RestoreMSCWarning
               }
           }
         quantum_type=IndexQuantum;
-        pad=(size_t) MagickMax((size_t) samples_per_pixel-1,0);
+        pad=(size_t) MagickMax((ssize_t) samples_per_pixel-1,0);
         if (image->matte != MagickFalse)
           {
             if (image->storage_class != PseudoClass)
               {
                 quantum_type=samples_per_pixel == 1 ? AlphaQuantum :
                   GrayAlphaQuantum;
-                pad=(size_t) MagickMax((size_t) samples_per_pixel-2,0);
+                pad=(size_t) MagickMax((ssize_t) samples_per_pixel-2,0);
               }
             else
               {
                 quantum_type=IndexAlphaQuantum;
-                pad=(size_t) MagickMax((size_t) samples_per_pixel-2,0);
+                pad=(size_t) MagickMax((ssize_t) samples_per_pixel-2,0);
               }
           }
         else
           if (image->storage_class != PseudoClass)
             {
               quantum_type=GrayQuantum;
-              pad=(size_t) MagickMax((size_t) samples_per_pixel-1,0);
+              pad=(size_t) MagickMax((ssize_t) samples_per_pixel-1,0);
             }
         status=SetQuantumPad(image,quantum_info,pad*pow(2,ceil(log(
           bits_per_sample)/log(2))));
@@ -1464,21 +1464,21 @@ RestoreMSCWarning
         /*
           Convert TIFF image to DirectClass MIFF image.
         */
-        pad=(size_t) MagickMax((size_t) samples_per_pixel-3,0);
+        pad=(size_t) MagickMax((ssize_t) samples_per_pixel-3,0);
         quantum_type=RGBQuantum;
         if (image->matte != MagickFalse)
           {
             quantum_type=RGBAQuantum;
-            pad=(size_t) MagickMax((size_t) samples_per_pixel-4,0);
+            pad=(size_t) MagickMax((ssize_t) samples_per_pixel-4,0);
           }
         if (image->colorspace == CMYKColorspace)
           {
-            pad=(size_t) MagickMax((size_t) samples_per_pixel-4,0);
+            pad=(size_t) MagickMax((ssize_t) samples_per_pixel-4,0);
             quantum_type=CMYKQuantum;
             if (image->matte != MagickFalse)
               {
                 quantum_type=CMYKAQuantum;
-                pad=(size_t) MagickMax((size_t) samples_per_pixel-5,0);
+                pad=(size_t) MagickMax((ssize_t) samples_per_pixel-5,0);
               }
           }
         status=SetQuantumPad(image,quantum_info,pad*((bits_per_sample+7) >> 3));