https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6582

diff --git a/coders/miff.c b/coders/miff.c
index 3cbe310ce877f680ca427fea977e9d27841924c6..456bdb7e46de98a23491bfb9902ad7e77b231c93 100644 (file)
--- a/coders/miff.c
+++ b/coders/miff.c
@@ -577,7 +577,7 @@ static Image *ReadMIFFImage(const ImageInfo *image_info,
             /*
               Get the keyword.
             */
-            length=MagickPathExtent;
+            length=MagickPathExtent-1;
             p=keyword;
             do
             {