/* This is an upstream patch. Details: https://www.cups.org/strfiles.php/3438/str4551.patch
Index: filter/raster.c
=================================================================== */
--- filter/raster.c	(revision 12451)
+++ filter/raster.c	(working copy)
@@ -3,7 +3,7 @@
  *
  *   Raster file routines for CUPS.
  *
- *   Copyright 2007-2010 by Apple Inc.
+ *   Copyright 2007-2015 by Apple Inc.
  *   Copyright 1997-2006 by Easy Software Products.
  *
  *   This file is part of the CUPS Imaging library.
@@ -239,7 +240,10 @@
   */
 
   if (!cups_raster_read_header(r))
+  {
+         memset(h, 0, sizeof(cups_page_header_t));
     return (0);
+  }
   
  /*
   * Copy the header to the user-supplied buffer...
@@ -268,7 +272,10 @@
   */
 
   if (!cups_raster_read_header(r))
+  {
+         memset(h, 0, sizeof(cups_page_header2_t));
     return (0);
+  }
   
  /*
   * Copy the header to the user-supplied buffer...
@@ -762,7 +762,7 @@
 
   cups_raster_update(r);
 
-  return (1);
+  return (r->header.cupsBytesPerLine != 0 && r->header.cupsHeight != 0 && (r->header.cupsBytesPerLine % r->bpp) == 0);
 }