void vnc_flush(VncState *vs)
{
    vnc_lock_output(vs);
    if (vs->csock != -1 && (vs->output.offset
#ifdef CONFIG_VNC_WS
                || vs->ws_output.offset
#endif
                )) {
        vnc_client_write_locked(vs);
    }
    vnc_unlock_output(vs);
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.