File ImageMagick-CVE-2016-7101.patch of Package ImageMagick.6947

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File ImageMagick-CVE-2016-7101.patch of Package ImageMagick.6947

Index: ImageMagick-6.8.9-8/coders/sgi.c
===================================================================
--- ImageMagick-6.8.9-8.orig/coders/sgi.c	2014-05-18 18:34:35.000000000 +0200
+++ ImageMagick-6.8.9-8/coders/sgi.c	2016-10-11 11:43:37.038606828 +0200
@@ -350,8 +350,10 @@ static Image *ReadSGIImage(const ImageIn
     iris_info.minimum_value=ReadBlobMSBLong(image);
     iris_info.maximum_value=ReadBlobMSBLong(image);
     iris_info.sans=ReadBlobMSBLong(image);
-    (void) ReadBlob(image,sizeof(iris_info.name),(unsigned char *)
+    count=ReadBlob(image,sizeof(iris_info.name),(unsigned char *)
       iris_info.name);
+    if (count != sizeof(iris_info.name))
+      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
     iris_info.name[sizeof(iris_info.name)-1]='\0';
     if (*iris_info.name != '\0')
       (void) SetImageProperty(image,"label",iris_info.name);
@@ -359,19 +361,20 @@ static Image *ReadSGIImage(const ImageIn
     if (iris_info.pixel_format != 0)
       ThrowReaderException(CorruptImageError,"ImproperImageHeader");
     count=ReadBlob(image,sizeof(iris_info.filler),iris_info.filler);
-    (void) count;
+    if (count != sizeof(iris_info.filler))
+      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
     image->columns=iris_info.columns;
     image->rows=iris_info.rows;
     image->depth=(size_t) MagickMin(iris_info.depth,MAGICKCORE_QUANTUM_DEPTH);
     if (iris_info.pixel_format == 0)
-      image->depth=(size_t) MagickMin((size_t) 8*
-        iris_info.bytes_per_pixel,MAGICKCORE_QUANTUM_DEPTH);
+      image->depth=(size_t) MagickMin((size_t) 8*iris_info.bytes_per_pixel,
+        MAGICKCORE_QUANTUM_DEPTH);
     if (iris_info.depth < 3)
       {
         image->storage_class=PseudoClass;
         image->colors=iris_info.bytes_per_pixel > 1 ? 65535 : 256;
       }
-    if ((image_info->ping != MagickFalse)  && (image_info->number_scenes != 0))
+    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
         break;
     /*

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File ImageMagick-CVE-2016-7101.patch of Package ImageMagick.6947

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