void vnc_init_state(VncState *vs)
{
    vs->initialized = true;
    VncDisplay *vd = vs->vd;

    vs->last_x = -1;
    vs->last_y = -1;

    vs->as.freq = 44100;
    vs->as.nchannels = 2;
    vs->as.fmt = AUD_FMT_S16;
    vs->as.endianness = 0;

    qemu_mutex_init(&vs->output_mutex);
    vs->bh = qemu_bh_new(vnc_jobs_bh, vs);

    QTAILQ_INSERT_HEAD(&vd->clients, vs, next);

    graphic_hw_update(NULL);

    vnc_write(vs, "RFB 003.008\n", 12);
    vnc_flush(vs);
    vnc_read_when(vs, protocol_version, 12);
    reset_keys(vs);
    if (vs->vd->lock_key_sync)
        vs->led = qemu_add_led_event_handler(kbd_leds, vs);

    vs->mouse_mode_notifier.notify = check_pointer_type_change;
    qemu_add_mouse_mode_change_notifier(&vs->mouse_mode_notifier);

    /* vs might be free()ed here */
}

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