File ImageMagick-CVE-2015-8897.patch of Package ImageMagick.6947

Overview Repositories Revisions Requests Users Attributes Meta

File ImageMagick-CVE-2015-8897.patch of Package ImageMagick.6947

Index: ImageMagick-6.8.8-1/magick/transform.c
===================================================================
--- ImageMagick-6.8.8-1.orig/magick/transform.c	2013-12-01 15:47:50.000000000 +0100
+++ ImageMagick-6.8.8-1/magick/transform.c	2016-06-09 12:08:44.453437147 +0200
@@ -67,6 +67,14 @@
 #include "magick/thread-private.h"
 #include "magick/transform.h"
 
+static inline MagickSizeType MagickMin(const MagickSizeType x,
+  const MagickSizeType y)
+{
+  if (x < y)
+    return(x);
+  return(y);
+}
+
 /*
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %                                                                             %
@@ -1741,6 +1749,7 @@ MagickExport Image *SpliceImage(const Im
     splice_geometry;
 
   ssize_t
+    columns,
     y;
 
   /*
@@ -1825,6 +1834,7 @@ MagickExport Image *SpliceImage(const Im
   */
   status=MagickTrue;
   progress=0;
+  columns=MagickMin(splice_geometry.x,(ssize_t) splice_image->columns);
   image_view=AcquireVirtualCacheView(image,exception);
   splice_view=AcquireAuthenticCacheView(splice_image,exception);
 #if defined(MAGICKCORE_OPENMP_SUPPORT)
@@ -1848,7 +1858,8 @@ MagickExport Image *SpliceImage(const Im
 
     if (status == MagickFalse)
       continue;
-    p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
+    p=GetCacheViewVirtualPixels(image_view,0,y,splice_image->columns,1,
+      exception);
     q=QueueCacheViewAuthenticPixels(splice_view,0,y,splice_image->columns,1,
       exception);
     if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
@@ -1858,7 +1869,7 @@ MagickExport Image *SpliceImage(const Im
       }
     indexes=GetCacheViewAuthenticIndexQueue(image_view);
     splice_indexes=GetCacheViewAuthenticIndexQueue(splice_view);
-    for (x=0; x < splice_geometry.x; x++)
+    for (x=0; x < columns; x++)
     {
       SetPixelRed(q,GetPixelRed(p));
       SetPixelGreen(q,GetPixelGreen(p));
@@ -1926,10 +1937,10 @@ MagickExport Image *SpliceImage(const Im
 
     if (status == MagickFalse)
       continue;
-    p=GetCacheViewVirtualPixels(image_view,0,y-(ssize_t) splice_geometry.height,
-      image->columns,1,exception);
-    if ((y < 0) || (y >= (ssize_t) splice_image->rows))
+    if ((y < 0) || (y >= (ssize_t)splice_image->rows))
       continue;
+    p=GetCacheViewVirtualPixels(image_view,0,y-(ssize_t) splice_geometry.height,
+      splice_image->columns,1,exception);
     q=QueueCacheViewAuthenticPixels(splice_view,0,y,splice_image->columns,1,
       exception);
     if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
@@ -1939,7 +1950,7 @@ MagickExport Image *SpliceImage(const Im
       }
     indexes=GetCacheViewAuthenticIndexQueue(image_view);
     splice_indexes=GetCacheViewAuthenticIndexQueue(splice_view);
-    for (x=0; x < splice_geometry.x; x++)
+    for (x=0; x < columns; x++)
     {
       SetPixelRed(q,GetPixelRed(p));
       SetPixelGreen(q,GetPixelGreen(p));

Places

File ImageMagick-CVE-2015-8897.patch of Package ImageMagick.6947

Places