From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 6 Feb 2018 01:13:48 +0000 (-0500)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5556
X-Git-Tag: 7.0.7-23~117
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d065756a01e652faa6a39ed7650a76a50f833069;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5556
---

diff --git a/coders/dcm.c b/coders/dcm.c
index a4a1372b6..618979850 100644
--- a/coders/dcm.c
+++ b/coders/dcm.c
@@ -3914,6 +3914,8 @@ static Image *ReadDCMImage(const ImageInfo *image_info,ExceptionInfo *exception)
       tag=(ReadBlobLSBShort(image) << 16) | ReadBlobLSBShort(image);
       (void) tag;
       length=(size_t) ReadBlobLSBLong(image);
+      if (length > GetBlobSize(image))
+        ThrowDCMException(CorruptImageError,"InsufficientImageDataInFile");
       stream_info->offset_count=length >> 2;
       if (stream_info->offset_count != 0)
         {