From: Cristy <urban-warrior@imagemagick.org>
Date: Mon, 2 Oct 2017 01:03:00 +0000 (-0400)
Subject: ...
X-Git-Tag: 7.0.7-6~12
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=70293c7830e9b0a13221f42e08bfcccbf3081096;p=imagemagick

...
---

diff --git a/coders/pict.c b/coders/pict.c
index fd79a6e36..31273b618 100644
--- a/coders/pict.c
+++ b/coders/pict.c
@@ -1341,7 +1341,7 @@ static Image *ReadPICTImage(const ImageInfo *image_info,
             if (length == 0)
               break;
             (void) ReadBlobMSBLong(image);
-            length-=4;
+            length-=MagickMin(length,4);
             if (length == 0)
               break;
             info=(unsigned char *) AcquireQuantumMemory(length,sizeof(*info));
@@ -1351,7 +1351,8 @@ static Image *ReadPICTImage(const ImageInfo *image_info,
             if (count != (ssize_t) length)
               {
                 info=(unsigned char *) RelinquishMagickMemory(info);
-                ThrowReaderException(ResourceLimitError,"UnableToReadImageData");
+                ThrowReaderException(ResourceLimitError,
+                  "UnableToReadImageData");
               }
             switch (type)
             {