SYSCALL_DEFINE2(tkill, pid_t, pid, int, sig)
{
	/* This is only valid for single tasks */
	if (pid <= 0)
		return -EINVAL;

	return do_tkill(0, pid, sig);
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.