From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 7 Feb 2018 21:28:22 +0000 (-0500)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6071
X-Git-Tag: 7.0.7-23~111
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a4a6230fe074791f82f8c6a36413118bedf7f772;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6071
---

diff --git a/coders/dcm.c b/coders/dcm.c
index 618979850..8885e1dd2 100644
--- a/coders/dcm.c
+++ b/coders/dcm.c
@@ -3887,6 +3887,8 @@ static Image *ReadDCMImage(const ImageInfo *image_info,ExceptionInfo *exception)
         Compute pixel scaling table.
       */
       length=(size_t) (GetQuantumRange(info.depth)+1);
+      if (length > GetBlobSize(image)) 
+        ThrowDCMException(CorruptImageError,"InsufficientImageDataInFile");
       info.scale=(Quantum *) AcquireQuantumMemory(length,sizeof(*info.scale));
       if (info.scale == (Quantum *) NULL)
         ThrowDCMException(ResourceLimitError,"MemoryAllocationFailed");