From be531eaab7f13ea935aaef231473044a439c9bfc Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 24 Jun 2017 08:29:07 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/523

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

diff --git a/coders/dpx.c b/coders/dpx.c
index cb9870dad..0d5694972 100644
--- a/coders/dpx.c
+++ b/coders/dpx.c
@@ -1106,6 +1106,8 @@ static Image *ReadDPXImage(const ImageInfo *image_info,ExceptionInfo *exception)
           StringInfo
             *profile;
 
+           if (dpx.file.user_size > GetBlobSize(image))
+             ThrowReaderException(CorruptImageError,"ImproperImageHeader");
            profile=BlobToStringInfo((const unsigned char *) NULL,
              dpx.file.user_size-sizeof(dpx.user.id));
            if (profile == (StringInfo *) NULL)
-- 
2.40.0