diff --git a/libavformat/thp.c b/libavformat/thp.c
index d3ae86c645..4abff1313a 100644
--- a/libavformat/thp.c
+++ b/libavformat/thp.c
@@ -93,6 +93,9 @@ static int thp_read_header(AVFormatContext *s)
     avio_seek (pb, thp->compoff, SEEK_SET);
     thp->compcount       = avio_rb32(pb);
 
+    if (thp->compcount > FF_ARRAY_ELEMS(thp->components))
+        return AVERROR_INVALIDDATA;
+
     /* Read the list of component types.  */
     avio_read(pb, thp->components, 16);