SYSCALL_DEFINE1(mlockall, int, flags)
{
	unsigned long lock_limit;
	int ret;

	if (!flags || (flags & ~(MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT)))
		return -EINVAL;

	if (!can_do_mlock())
		return -EPERM;

	if (flags & MCL_CURRENT)
		lru_add_drain_all();	/* flush pagevec */

	lock_limit = rlimit(RLIMIT_MEMLOCK);
	lock_limit >>= PAGE_SHIFT;

	if (down_write_killable(&current->mm->mmap_sem))
		return -EINTR;

	ret = -ENOMEM;
	if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) ||
	    capable(CAP_IPC_LOCK))
		ret = apply_mlockall_flags(flags);
	up_write(&current->mm->mmap_sem);
	if (!ret && (flags & MCL_CURRENT))
		mm_populate(0, TASK_SIZE);

	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.