From 46f5a05f2c93fe6443c43d70705c15b1b5c69a4f Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Fri, 22 Apr 2016 21:34:56 -0400
Subject: [PATCH] 
 https://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=29496

---
 MagickCore/cache.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/MagickCore/cache.c b/MagickCore/cache.c
index ff87e9442..9ff8dec53 100644
--- a/MagickCore/cache.c
+++ b/MagickCore/cache.c
@@ -2870,6 +2870,8 @@ MagickPrivate const Quantum *GetVirtualPixelsFromNexus(const Image *image,
           s+=length*cache_info->metacontent_extent;
         }
     }
+    if (u < (ssize_t) columns)
+      break;
   }
   /*
     Free resources.
@@ -2877,6 +2879,8 @@ MagickPrivate const Quantum *GetVirtualPixelsFromNexus(const Image *image,
   if (virtual_metacontent != (void *) NULL)
     virtual_metacontent=(void *) RelinquishMagickMemory(virtual_metacontent);
   virtual_nexus=DestroyPixelCacheNexus(virtual_nexus,1);
+  if (v < (ssize_t) rows)
+    return((const Quantum *) NULL);
   return(pixels);
 }
 
-- 
2.40.0