diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 789a124809e3c2b118bb376b9b011eabfabf64b1..0b53c7cadd87f25acb3ad0fec33410ee60d2854e 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -1750,7 +1750,8 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	pn_len = secy->xpn ? MACSEC_XPN_PN_LEN : MACSEC_DEFAULT_PN_LEN;
-	if (nla_len(tb_sa[MACSEC_SA_ATTR_PN]) != pn_len) {
+	if (tb_sa[MACSEC_SA_ATTR_PN] &&
+	    nla_len(tb_sa[MACSEC_SA_ATTR_PN]) != pn_len) {
 		pr_notice("macsec: nl: add_rxsa: bad pn length: %d != %d\n",
 			  nla_len(tb_sa[MACSEC_SA_ATTR_PN]), pn_len);
 		rtnl_unlock();