diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 2e65271bed01..a79f5a89cab1 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -543,6 +543,18 @@ nf_ct_key_equal(struct nf_conntrack_tuple_hash *h,
 	       net_eq(net, nf_ct_net(ct));
 }
 
+static inline bool
+nf_ct_match(const struct nf_conn *ct1, const struct nf_conn *ct2)
+{
+	return nf_ct_tuple_equal(&ct1->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
+				 &ct2->tuplehash[IP_CT_DIR_ORIGINAL].tuple) &&
+	       nf_ct_tuple_equal(&ct1->tuplehash[IP_CT_DIR_REPLY].tuple,
+				 &ct2->tuplehash[IP_CT_DIR_REPLY].tuple) &&
+	       nf_ct_zone_equal(ct1, nf_ct_zone(ct2), IP_CT_DIR_ORIGINAL) &&
+	       nf_ct_zone_equal(ct1, nf_ct_zone(ct2), IP_CT_DIR_REPLY) &&
+	       net_eq(nf_ct_net(ct1), nf_ct_net(ct2));
+}
+
 /* caller must hold rcu readlock and none of the nf_conntrack_locks */
 static void nf_ct_gc_expired(struct nf_conn *ct)
 {
@@ -736,19 +748,21 @@ static int nf_ct_resolve_clash(struct net *net, struct sk_buff *skb,
 	/* This is the conntrack entry already in hashes that won race. */
 	struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(h);
 	const struct nf_conntrack_l4proto *l4proto;
+	enum ip_conntrack_info oldinfo;
+	struct nf_conn *loser_ct = nf_ct_get(skb, &oldinfo);
 
 	l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
 	if (l4proto->allow_clash &&
-	    ((ct->status & IPS_NAT_DONE_MASK) == 0) &&
 	    !nf_ct_is_dying(ct) &&
 	    atomic_inc_not_zero(&ct->ct_general.use)) {
-		enum ip_conntrack_info oldinfo;
-		struct nf_conn *loser_ct = nf_ct_get(skb, &oldinfo);
-
-		nf_ct_acct_merge(ct, ctinfo, loser_ct);
-		nf_conntrack_put(&loser_ct->ct_general);
-		nf_ct_set(skb, ct, oldinfo);
-		return NF_ACCEPT;
+		if (((ct->status & IPS_NAT_DONE_MASK) == 0) ||
+		    nf_ct_match(ct, loser_ct)) {
+			nf_ct_acct_merge(ct, ctinfo, loser_ct);
+			nf_conntrack_put(&loser_ct->ct_general);
+			nf_ct_set(skb, ct, oldinfo);
+			return NF_ACCEPT;
+		}
+		nf_ct_put(ct);
 	}
 	NF_CT_STAT_INC(net, drop);
 	return NF_DROP;