socket: reset IPv4 socket to NULL after free

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/socket.c b/src/socket.c
index e52218e..9dd1683 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -466,6 +466,7 @@ int socket_init(struct wireguard_device *wg)
 	if (ret < 0) {
 		pr_err("Could not create IPv6 socket\n");
 		udp_tunnel_sock_release(new4);
+		rcu_assign_pointer(wg->sock4, NULL);
 		goto out;
 	}