int put_io_context(struct io_context *ioc)
{
	if (ioc == NULL)
		return 1;

	BUG_ON(atomic_long_read(&ioc->refcount) == 0);

	if (atomic_long_dec_and_test(&ioc->refcount)) {
		rcu_read_lock();
		if (ioc->aic && ioc->aic->dtor)
			ioc->aic->dtor(ioc->aic);
		cfq_dtor(ioc);
		rcu_read_unlock();

		kmem_cache_free(iocontext_cachep, ioc);
		return 1;
	}
	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.