From d17c047f7bff7c0edbf304470cd2ab9d02fbf617 Mon Sep 17 00:00:00 2001
From: Cristy <mikayla-grace@urban-warrior.org>
Date: Mon, 29 Apr 2019 07:57:09 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/1561

---
 coders/png.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/coders/png.c b/coders/png.c
index 84b95c234..077cc845b 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -8180,8 +8180,11 @@ Magick_png_write_raw_profile(const ImageInfo *image_info,png_struct *ping,
    unsigned char
      hex[16]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
 
-   if (LocaleNCompare((char *) profile_type+1, "ng-chunk-",9) == 0)
-      return;
+   if (length > 1)
+     {
+       if (LocaleNCompare((char *) profile_type+1, "ng-chunk-",9) == 0)
+          return;
+     }
 
    if (image_info->verbose)
      {
-- 
2.50.1