diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index d7209d124111..befa7e83ee49 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2872,6 +2872,9 @@ ctnetlink_glue_attach_expect(const struct nlattr *attr, struct nf_conn *ct,
 	if (err < 0)
 		return err;
 
+	if (!cda[CTA_EXPECT_TUPLE] || !cda[CTA_EXPECT_MASK])
+		return -EINVAL;
+
 	err = ctnetlink_glue_exp_parse((const struct nlattr * const *)cda,
 				       ct, &tuple, &mask);
 	if (err < 0)