int nfsd_pool_stats_open(struct inode *inode, struct file *file)
{
	int ret;
	struct nfsd_net *nn = net_generic(inode->i_sb->s_fs_info, nfsd_net_id);

	mutex_lock(&nfsd_mutex);
	if (nn->nfsd_serv == NULL) {
		mutex_unlock(&nfsd_mutex);
		return -ENODEV;
	}
	/* bump up the psudo refcount while traversing */
	svc_get(nn->nfsd_serv);
	ret = svc_pool_stats_open(nn->nfsd_serv, file);
	mutex_unlock(&nfsd_mutex);
	return ret;
}

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.