From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 25 Jul 2017 12:13:15 +0000 (-0400)
Subject: https://github.com/ImageMagick/ImageMagick/issues/618
X-Git-Tag: 7.0.6-4~20
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=387adbe4b05a545b9f3972e862602480c850303c;p=imagemagick

https://github.com/ImageMagick/ImageMagick/issues/618
---

diff --git a/coders/png.c b/coders/png.c
index 0191f3aff..a3a84bc1c 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -4405,7 +4405,14 @@ static Image *ReadOneJNGImage(MngInfo *mng_info,
     if (length != 0)
       {
         if (length > GetBlobSize(image))
-          ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
+          {
+            if (color_image != (Image *) NULL)
+              color_image=DestroyImage(color_image);
+            if (color_image_info != (ImageInfo *) NULL)
+              color_image_info=DestroyImageInfo(color_image_info);
+            ThrowReaderException(CorruptImageError,
+              "InsufficientImageDataInFile");
+          }
         chunk=(unsigned char *) AcquireQuantumMemory(length,sizeof(*chunk));
 
         if (chunk == (unsigned char *) NULL)