int virtio_set_status(VirtIODevice *vdev, uint8_t val)
{
    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
    trace_virtio_set_status(vdev, val);

    if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
        if (!(vdev->status & VIRTIO_CONFIG_S_FEATURES_OK) &&
            val & VIRTIO_CONFIG_S_FEATURES_OK) {
            int ret = virtio_validate_features(vdev);

            if (ret) {
                return ret;
            }
        }
    }
    if (k->set_status) {
        k->set_status(vdev, val);
    }
    vdev->status = val;
    return 0;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.