int reds_handle_migrate_data(MainChannelClient *mcc, SpiceMigrateDataMain *mig_data, uint32_t size)
{
    VDIPortState *agent_state = &reds->agent_state;

    /*
     * Now that the client has switched to the target server, if main_channel
     * controls the mm-time, we update the client's mm-time.
     * (MSG_MAIN_INIT is not sent for a migrating connection)
     */
    if (reds->mm_timer_enabled) {
        reds_send_mm_time();
    }
    if (mig_data->agent_base.connected) {
        if (agent_state->base) { // agent was attached before migration data has arrived
            if (!vdagent) {
                spice_assert(agent_state->plug_generation > 0);
                main_channel_push_agent_disconnected(reds->main_channel);
                spice_debug("agent is no longer connected");
            } else {
                if (agent_state->plug_generation > 1) {
                    /* spice_char_device_state_reset takes care of not making the device wait for migration data */
                    spice_debug("agent has been detached and reattached before receiving migration data");
                    main_channel_push_agent_disconnected(reds->main_channel);
                    main_channel_push_agent_connected(reds->main_channel);
                } else {
                    return reds_agent_state_restore(mig_data);
                }
            }
        } else {
            /* restore agent starte when the agent gets attached */
            spice_assert(agent_state->plug_generation == 0);
            agent_state->mig_data = spice_memdup(mig_data, size);
        }
    } else {
        if (vdagent) {
            /* spice_char_device_client_remove disables waiting for migration data */
            spice_char_device_client_remove(agent_state->base,
                                            main_channel_client_get_base(mcc)->client);
            main_channel_push_agent_connected(reds->main_channel);
        }
    }

    return TRUE;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.