static void red_channel_client_send_set_ack(RedChannelClient *rcc)
{
    SpiceMsgSetAck ack;

    spice_assert(rcc);
    red_channel_client_init_send_data(rcc, SPICE_MSG_SET_ACK, NULL);
    ack.generation = ++rcc->ack_data.generation;
    ack.window = rcc->ack_data.client_window;
    rcc->ack_data.messages_window = 0;

    spice_marshall_msg_set_ack(rcc->send_data.marshaller, &ack);

    red_channel_client_begin_send_message(rcc);
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.