From: Cristy <urban-warrior@imagemagick.org>
Date: Fri, 30 Mar 2018 00:47:50 +0000 (-0400)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7118
X-Git-Tag: 7.0.7-29~269
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=822698ae825b168b6b763d65e536083da8b4ea97;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7118
---

diff --git a/coders/tiff.c b/coders/tiff.c
index 36810ec34..004af0626 100644
--- a/coders/tiff.c
+++ b/coders/tiff.c
@@ -1720,8 +1720,7 @@ RestoreMSCWarning
           }
       }
     method=ReadGenericMethod;
-    rows_per_strip=image->columns*image->rows;
-    if (TIFFGetField(tiff,TIFFTAG_ROWSPERSTRIP,&rows_per_strip) == 1)
+    if (TIFFGetFieldDefaulted(tiff,TIFFTAG_ROWSPERSTRIP,&rows_per_strip) == 1)
       {
         char
           value[MagickPathExtent];