diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 1294af4e0127..f9038d6b109e 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -200,8 +200,10 @@ static void tcp_reinit_congestion_control(struct sock *sk,
 	icsk->icsk_ca_ops = ca;
 	icsk->icsk_ca_setsockopt = 1;
 
-	if (sk->sk_state != TCP_CLOSE)
+	if (sk->sk_state != TCP_CLOSE) {
+		memset(icsk->icsk_ca_priv, 0, sizeof(icsk->icsk_ca_priv));
 		tcp_init_congestion_control(sk);
+	}
 }
 
 /* Manage refcounts on socket close. */