static unsigned int sock_poll(struct file *file, poll_table *wait)
{
	unsigned int busy_flag = 0;
	struct socket *sock;

	/*
	 *      We can't return errors to poll, so it's either yes or no.
	 */
	sock = file->private_data;

	if (sk_can_busy_loop(sock->sk)) {
		/* this socket can poll_ll so tell the system call */
		busy_flag = POLL_BUSY_LOOP;

		/* once, only if requested by syscall */
		if (wait && (wait->_key & POLL_BUSY_LOOP))
			sk_busy_loop(sock->sk, 1);
	}

	return busy_flag | sock->ops->poll(file, sock, wait);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.