From 505bae639081e388ffe786af9dfd84bbe44bb640 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 29 Aug 2017 07:02:02 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/705

---
 coders/thumbnail.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/coders/thumbnail.c b/coders/thumbnail.c
index 85f42a36f..e129ff04e 100644
--- a/coders/thumbnail.c
+++ b/coders/thumbnail.c
@@ -193,6 +193,8 @@ static MagickBooleanType WriteTHUMBNAILImage(const ImageInfo *image_info,
   (void) ResetMagickMemory(magick,0,sizeof(magick));
   for (i=0; i < (ssize_t) length; i++)
   {
+    if ((offset+i) >= GetStringInfoLength(profile))
+      break;
     magick[0]=magick[1];
     magick[1]=magick[2];
     magick[2]=GetStringInfoDatum(profile)[offset+i];
-- 
2.50.1