diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index f805ccc36f..442d652cf6 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1069,6 +1069,9 @@ static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *seg
 {
     int i, length;
 
+    if (segment->temporal_offset_entries)
+        return AVERROR_INVALIDDATA;
+
     segment->nb_index_entries = avio_rb32(pb);
 
     length = avio_rb32(pb);