https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7335

diff --git a/coders/miff.c b/coders/miff.c
index cfd3294ddd4edb6cef64e47a2c3555bbe3f70019..d6531aa22f77032f9d806d13eb680702787ec503 100644 (file)
--- a/coders/miff.c
+++ b/coders/miff.c
@@ -1529,7 +1529,7 @@ static Image *ReadMIFFImage(const ImageInfo *image_info,
                   zip_info.next_in);
               }
             code=inflate(&zip_info,Z_SYNC_FLUSH);
-            if ((code < 0) || (code == Z_NEED_DICT))
+            if ((code != Z_OK) && (code != Z_STREAM_END))
               {
                 status=MagickFalse;
                 break;