diff --git a/libavformat/idcin.c b/libavformat/idcin.c
index f1df00244fc39daadf53a19b80823a58a4612cb3..bede04075e04bbc2859b63380a05359c7bc72834 100644
--- a/libavformat/idcin.c
+++ b/libavformat/idcin.c
@@ -256,6 +256,8 @@ static int idcin_read_packet(AVFormatContext *s,
         chunk_size = avio_rl32(pb);
         /* skip the number of decoded bytes (always equal to width * height) */
         avio_skip(pb, 4);
+        if (chunk_size < 4)
+            return AVERROR_INVALIDDATA;
         chunk_size -= 4;
         ret= av_get_packet(pb, pkt, chunk_size);
         if (ret < 0)