diff --git a/libavformat/sctp.c b/libavformat/sctp.c
index 4122fbe312..9a6b991803 100644
--- a/libavformat/sctp.c
+++ b/libavformat/sctp.c
@@ -332,6 +332,9 @@ static int sctp_write(URLContext *h, const uint8_t *buf, int size)
     }
 
     if (s->max_streams) {
+        if (size < 2)
+            return AVERROR(EINVAL);
+
         /*StreamId is introduced as a 2byte code into the stream*/
         struct sctp_sndrcvinfo info = { 0 };
         info.sinfo_stream           = AV_RB16(buf);