diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c
index bfbbb02627..c55ed489a1 100644
--- a/libavformat/cafdec.c
+++ b/libavformat/cafdec.c
@@ -79,6 +79,9 @@ static int read_desc_chunk(AVFormatContext *s)
     st->codec->channels    = avio_rb32(pb);
     st->codec->bits_per_coded_sample = avio_rb32(pb);
 
+    if (caf->bytes_per_packet < 0 || caf->frames_per_packet < 0)
+        return AVERROR_INVALIDDATA;
+
     /* calculate bit rate for constant size packets */
     if (caf->frames_per_packet > 0 && caf->bytes_per_packet > 0) {
         st->codec->bit_rate = (uint64_t)st->codec->sample_rate * (uint64_t)caf->bytes_per_packet * 8