void virtio_cleanup(VirtIODevice *vdev)
{
    qemu_del_vm_change_state_handler(vdev->vmstate);
    g_free(vdev->config);
    g_free(vdev->vq);
    g_free(vdev->vector_queues);
}

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.