From: Cristy <urban-warrior@imagemagick.org>
Date: Mon, 19 Mar 2018 23:25:44 +0000 (-0400)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7016
X-Git-Tag: 7.0.7-28~62
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b7b7ba30cbe5eab4289fb080a88eff446935e49a;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7016
---

diff --git a/coders/wpg.c b/coders/wpg.c
index b91848154..d453f6f6a 100644
--- a/coders/wpg.c
+++ b/coders/wpg.c
@@ -1210,7 +1210,7 @@ static Image *ReadWPGImage(const ImageInfo *image_info,
                         sizeof(*image->colormap));
                 }
 
-              if (bpp == 1)
+              if ((bpp == 1) && (image->colors > 1))
                 {
                   if(image->colormap[0].red==0 &&
                      image->colormap[0].green==0 &&