Given the following code containing errors, provide Common Weakness Enumeration (CWE) identifiers and corresponding messages in JSON format. Each identified weakness should have a unique entry in the JSON array.
    Code: static int bcm_release(struct socket *sock)
{
	struct sock *sk = sock->sk;
	struct net *net;
	struct bcm_sock *bo;
	struct bcm_op *op, *next;

	if (!sk)
		return 0;

	net = sock_net(sk);
	bo = bcm_sk(sk);

	/* remove bcm_ops, timer, rx_unregister(), etc. */

	spin_lock(&bcm_notifier_lock);
	while (bcm_busy_notifier == bo) {
		spin_unlock(&bcm_notifier_lock);
		schedule_timeout_uninterruptible(1);
		spin_lock(&bcm_notifier_lock);
	}
	list_del(&bo->notifier);
	spin_unlock(&bcm_notifier_lock);

	lock_sock(sk);

	list_for_each_entry_safe(op, next, &bo->tx_ops, list)
		bcm_remove_op(op);

	list_for_each_entry_safe(op, next, &bo->rx_ops, list) {
		/*
		 * Don't care if we're bound or not (due to netdev problems)
		 * can_rx_unregister() is always a save thing to do here.
		 */
		if (op->ifindex) {
			/*
			 * Only remove subscriptions that had not
			 * been removed due to NETDEV_UNREGISTER
			 * in bcm_notifier()
			 */
			if (op->rx_reg_dev) {
				struct net_device *dev;

				dev = dev_get_by_index(net, op->ifindex);
				if (dev) {
					bcm_rx_unreg(dev, op);
					dev_put(dev);
				}
			}
		} else
			can_rx_unregister(net, NULL, op->can_id,
					  REGMASK(op->can_id),
					  bcm_rx_handler, op);

		bcm_remove_op(op);
	}

#if IS_ENABLED(CONFIG_PROC_FS)
	/* remove procfs entry */
	if (net->can.bcmproc_dir && bo->bcm_proc_read)
		remove_proc_entry(bo->procname, net->can.bcmproc_dir);
#endif /* CONFIG_PROC_FS */

	/* remove device reference */
	if (bo->bound) {
		bo->bound   = 0;
		bo->ifindex = 0;
	}

	sock_orphan(sk);
	sock->sk = NULL;

	release_sock(sk);
	sock_put(sk);

	return 0;
} ; Sample JSON Format Confermily Expected output: "examples" => "cwe": "xxx"; "message": "xxx"
    
 'cwe': ['CWE-362'], 'message': 'can: bcm: delay release of struct bcm_op after synchronize_rcu()

can_rx_register() callbacks may be called concurrently to the call to
can_rx_unregister(). The callbacks and callback data, though, are
protected by RCU and the struct sock reference count.

So the callback data is really attached to the life of sk, meaning
that it should be released on sk_destruct. However, bcm_remove_op()
calls tasklet_kill(), and RCU callbacks may be called under RCU
softirq, so that cannot be used on kernels before the introduction of
HRTIMER_MODE_SOFT.

However, bcm_rx_handler() is called under RCU protection, so after
calling can_rx_unregister(), we may call synchronize_rcu() in order to
wait for any RCU read-side critical sections to finish. That is,
bcm_rx_handler() won't be called anymore for those ops. So, we only
free them, after we do that synchronize_rcu().

Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Link: https://lore.kernel.org/r/20210619161813.2098382-1-cascardo@canonical.com
Cc: linux-stable <stable@vger.kernel.org>
Reported-by: syzbot+0f7e7e5e2f4f40fa89c0@syzkaller.appspotmail.com
Reported-by: Norbert Slusarek <nslusarek@gmx.net>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>'