diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 236e25abc7a4..84a4c97d0f75 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3215,6 +3215,9 @@ bool sctp_verify_asconf(const struct sctp_association *asoc,
 		*errp = param.p;
 		switch (param.p->type) {
 		case SCTP_PARAM_ERR_CAUSE:
+			if (length < sizeof(struct sctp_addip_param) +
+				     sizeof(struct sctp_errhdr))
+				return false;
 			break;
 		case SCTP_PARAM_IPV4_ADDRESS:
 			if (length != sizeof(struct sctp_ipv4addr_param))
@@ -3448,20 +3451,15 @@ static __be16 sctp_get_asconf_response(struct sctp_chunk *asconf_ack,
 			case SCTP_PARAM_ERR_CAUSE:
 				length = sizeof(*asconf_ack_param);
 				err_param = (void *)asconf_ack_param + length;
-				asconf_ack_len -= length;
-				if (asconf_ack_len > 0)
-					return err_param->cause;
-				else
-					return SCTP_ERROR_INV_PARAM;
-				break;
+				return err_param->cause;
 			default:
 				return SCTP_ERROR_INV_PARAM;
 			}
 		}
 
 		length = ntohs(asconf_ack_param->param_hdr.length);
-		asconf_ack_param = (void *)asconf_ack_param + length;
-		asconf_ack_len -= length;
+		asconf_ack_param = (void *)asconf_ack_param + SCTP_PAD4(length);
+		asconf_ack_len -= SCTP_PAD4(length);
 	}
 
 	return err_code;