int do_prlimit(struct task_struct *tsk, unsigned int resource,
		struct rlimit *new_rlim, struct rlimit *old_rlim)
{
	struct rlimit *rlim;
	int retval = 0;

	if (resource >= RLIM_NLIMITS)
		return -EINVAL;
	if (new_rlim) {
		if (new_rlim->rlim_cur > new_rlim->rlim_max)
			return -EINVAL;
		if (resource == RLIMIT_NOFILE &&
				new_rlim->rlim_max > sysctl_nr_open)
			return -EPERM;
	}

	/* protect tsk->signal and tsk->sighand from disappearing */
	read_lock(&tasklist_lock);
	if (!tsk->sighand) {
		retval = -ESRCH;
		goto out;
	}

	rlim = tsk->signal->rlim + resource;
	task_lock(tsk->group_leader);
	if (new_rlim) {
		/* Keep the capable check against init_user_ns until
		   cgroups can contain all limits */
		if (new_rlim->rlim_max > rlim->rlim_max &&
				!capable(CAP_SYS_RESOURCE))
			retval = -EPERM;
		if (!retval)
			retval = security_task_setrlimit(tsk->group_leader,
					resource, new_rlim);
		if (resource == RLIMIT_CPU && new_rlim->rlim_cur == 0) {
			/*
			 * The caller is asking for an immediate RLIMIT_CPU
			 * expiry.  But we use the zero value to mean "it was
			 * never set".  So let's cheat and make it one second
			 * instead
			 */
			new_rlim->rlim_cur = 1;
		}
	}
	if (!retval) {
		if (old_rlim)
			*old_rlim = *rlim;
		if (new_rlim)
			*rlim = *new_rlim;
	}
	task_unlock(tsk->group_leader);

	/*
	 * RLIMIT_CPU handling.   Note that the kernel fails to return an error
	 * code if it rejected the user's attempt to set RLIMIT_CPU.  This is a
	 * very long-standing error, and fixing it now risks breakage of
	 * applications, so we live with it
	 */
	 if (!retval && new_rlim && resource == RLIMIT_CPU &&
			 new_rlim->rlim_cur != RLIM_INFINITY)
		update_rlimit_cpu(tsk, new_rlim->rlim_cur);
out:
	read_unlock(&tasklist_lock);
	return retval;
}

This category covers vulnerabilities resulting from misconfigured system settings that can allow unintended access or insecure behavior due to improper management of configuration parameters.