File GraphicsMagick-CVE-2016-10070.patch of Package GraphicsMagick.7782

Index: GraphicsMagick-1.3.25/coders/mat.c
===================================================================
--- GraphicsMagick-1.3.25.orig/coders/mat.c	2016-09-05 21:20:23.000000000 +0200
+++ GraphicsMagick-1.3.25/coders/mat.c	2017-01-27 11:40:34.563540187 +0100
@@ -991,9 +991,10 @@ NoMemory: ThrowMATReaderException(Resour
     }  
 
   /* ----- Load raster data ----- */
-    BImgBuff = MagickAllocateMemory(unsigned char *,(size_t) (ldblk));    /* Ldblk was set in the check phase */
+    BImgBuff = MagickAllocateMemory(unsigned char *,(size_t) (MagickArraySize(ldblk,sizeof(double))));    /* Ldblk was set in the check phase */
     if (BImgBuff == NULL)
       goto NoMemory;
+    (void) memset(BImgBuff,0,ldblk*sizeof(double));
 
     if (CellType==miDOUBLE)        /* Find Min and Max Values for floats */
     {