SYSCALL_DEFINE0(munlockall)
{
	int ret;

	if (down_write_killable(&current->mm->mmap_sem))
		return -EINTR;
	ret = apply_mlockall_flags(0);
	up_write(&current->mm->mmap_sem);
	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.