From: Cristy <urban-warrior@imagemagick.org>
Date: Sun, 1 Apr 2018 17:21:34 +0000 (-0400)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7017
X-Git-Tag: 7.0.7-29~220
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d74443932d70f53cad92e3d5898e918633918a36;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7017
---

diff --git a/coders/mat.c b/coders/mat.c
index 28f1baa49..3d797306e 100644
--- a/coders/mat.c
+++ b/coders/mat.c
@@ -686,6 +686,8 @@ static Image *ReadMATImageV4(const ImageInfo *image_info,Image *image,
     }
     image->columns=(size_t) HDR.nRows;
     image->rows=(size_t) HDR.nCols;
+    if ((image->columns == 0) || (image->rows == 0))
+      return(image);
     if (image_info->ping != MagickFalse)
       {
         Swap(image->columns,image->rows);
@@ -938,9 +940,6 @@ static Image *ReadMATImage(const ImageInfo *image_info,ExceptionInfo *exception)
     image->endian = MSBEndian;
   }
   else
-    goto MATLAB_KO;    /* unsupported endian */
-
-  if (strncmp(MATLAB_HDR.identific, "MATLAB", 6))
     {
 MATLAB_KO:
       if ((image != image2) && (image2 != (Image *) NULL))