diff --git a/net/sctp/input.c b/net/sctp/input.c
index 07bd59a98205..0b09f296df2d 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -1125,6 +1125,9 @@ static struct sctp_association *__sctp_rcv_asconf_lookup(
 	union sctp_addr_param *param;
 	union sctp_addr paddr;
 
+	if (ntohs(ch->length) < sizeof(*asconf) + sizeof(struct sctp_paramhdr))
+		return NULL;
+
 	/* Skip over the ADDIP header and find the Address parameter */
 	param = (union sctp_addr_param *)(asconf + 1);