static void spice_server_char_device_remove_interface(SpiceBaseInstance *sin)
{
    SpiceCharDeviceInstance* char_device =
            SPICE_CONTAINEROF(sin, SpiceCharDeviceInstance, base);

    spice_info("remove CHAR_DEVICE %s", char_device->subtype);
    if (strcmp(char_device->subtype, SUBTYPE_VDAGENT) == 0) {
        if (vdagent) {
            reds_agent_remove();
        }
    }
#ifdef USE_SMARTCARD
    else if (strcmp(char_device->subtype, SUBTYPE_SMARTCARD) == 0) {
        smartcard_device_disconnect(char_device);
    }
#endif
    else if (strcmp(char_device->subtype, SUBTYPE_USBREDIR) == 0 ||
             strcmp(char_device->subtype, SUBTYPE_PORT) == 0) {
        spicevmc_device_disconnect(char_device);
    } else {
        spice_warning("failed to remove char device %s", char_device->subtype);
    }

    char_device->st = NULL;
}

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.