diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 1ab5ad0dcf24..006585dc8b5c 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -461,6 +461,21 @@ fl_create(struct net *net, struct sock *sk, struct in6_flowlabel_req *freq,
 	return NULL;
 }
 
+static bool fl_sock_at_lease_limit(const struct sock *sk)
+{
+	const struct ipv6_fl_socklist *sfl;
+	int count = 0;
+
+	rcu_read_lock();
+	for_each_sk_fl_rcu(sk, sfl) {
+		if (++count >= FL_MAX_PER_SOCK)
+			break;
+	}
+	rcu_read_unlock();
+
+	return count >= FL_MAX_PER_SOCK;
+}
+
 static int mem_check(struct sock *sk)
 {
 	const int unpriv_total_limit = FL_MAX_SIZE - (FL_MAX_SIZE / 4);
@@ -679,6 +694,10 @@ static int ipv6_flowlabel_get(struct sock *sk, struct in6_flowlabel_req *freq,
 			err = -ENOMEM;
 			if (!sfl1)
 				goto release;
+			err = -ENOBUFS;
+			if (fl_sock_at_lease_limit(sk) &&
+			    !capable(CAP_NET_ADMIN))
+				goto release;
 			if (fl->linger > fl1->linger)
 				fl1->linger = fl->linger;
 			if ((long)(fl->expires - fl1->expires) > 0)