diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index f0d141f10b..5c7acb5d00 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1249,6 +1249,9 @@ static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int
     case 0x3F0B:
         segment->index_edit_rate.num = avio_rb32(pb);
         segment->index_edit_rate.den = avio_rb32(pb);
+        if (segment->index_edit_rate.num <= 0 ||
+            segment->index_edit_rate.den <= 0)
+            return AVERROR_INVALIDDATA;
         av_log(NULL, AV_LOG_TRACE, "IndexEditRate %d/%d\n", segment->index_edit_rate.num,
                 segment->index_edit_rate.den);
         break;