From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 10 Feb 2018 17:57:01 +0000 (-0500)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6199
X-Git-Tag: 7.0.7-23~72
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ec279d07151fc4fd6641b90c8ab4f922970032c6;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6199
---

diff --git a/coders/dcm.c b/coders/dcm.c
index eff8818a9..3612c4585 100644
--- a/coders/dcm.c
+++ b/coders/dcm.c
@@ -3778,7 +3778,8 @@ static Image *ReadDCMImage(const ImageInfo *image_info,ExceptionInfo *exception)
       */
       for (i=0; i < (ssize_t) stream_info->remaining; i++)
         (void) ReadBlobByte(image);
-      (void) ((ReadBlobLSBShort(image) << 16) | ReadBlobLSBShort(image));
+      (void) (((ssize_t) ReadBlobLSBShort(image) << 16) |
+        ReadBlobLSBShort(image));
       length=(size_t) ReadBlobLSBLong(image);
       if (length > GetBlobSize(image))
         ThrowDCMException(CorruptImageError,"InsufficientImageDataInFile");