int fpm_unix_init_child(struct fpm_worker_pool_s *wp) /* {{{ */
{
	int is_root = !geteuid();
	int made_chroot = 0;

	if (wp->config->rlimit_files) {
		struct rlimit r;

		r.rlim_max = r.rlim_cur = (rlim_t) wp->config->rlimit_files;

		if (0 > setrlimit(RLIMIT_NOFILE, &r)) {
			zlog(ZLOG_SYSERROR, "[pool %s] failed to set rlimit_files for this pool. Please check your system limits or decrease rlimit_files. setrlimit(RLIMIT_NOFILE, %d)", wp->config->name, wp->config->rlimit_files);
		}
	}

	if (wp->config->rlimit_core) {
		struct rlimit r;

		r.rlim_max = r.rlim_cur = wp->config->rlimit_core == -1 ? (rlim_t) RLIM_INFINITY : (rlim_t) wp->config->rlimit_core;

		if (0 > setrlimit(RLIMIT_CORE, &r)) {
			zlog(ZLOG_SYSERROR, "[pool %s] failed to set rlimit_core for this pool. Please check your system limits or decrease rlimit_core. setrlimit(RLIMIT_CORE, %d)", wp->config->name, wp->config->rlimit_core);
		}
	}

	if (is_root && wp->config->chroot && *wp->config->chroot) {
		if (0 > chroot(wp->config->chroot)) {
			zlog(ZLOG_SYSERROR, "[pool %s] failed to chroot(%s)",  wp->config->name, wp->config->chroot);
			return -1;
		}
		made_chroot = 1;
	}

	if (wp->config->chdir && *wp->config->chdir) {
		if (0 > chdir(wp->config->chdir)) {
			zlog(ZLOG_SYSERROR, "[pool %s] failed to chdir(%s)", wp->config->name, wp->config->chdir);
			return -1;
		}
	} else if (made_chroot) {
		chdir("/");
	}

	if (is_root) {

		if (wp->config->process_priority != 64) {
			if (setpriority(PRIO_PROCESS, 0, wp->config->process_priority) < 0) {
				zlog(ZLOG_SYSERROR, "[pool %s] Unable to set priority for this new process", wp->config->name);
				return -1;
			}
		}

		if (wp->set_gid) {
			if (0 > setgid(wp->set_gid)) {
				zlog(ZLOG_SYSERROR, "[pool %s] failed to setgid(%d)", wp->config->name, wp->set_gid);
				return -1;
			}
		}
		if (wp->set_uid) {
			if (0 > initgroups(wp->config->user, wp->set_gid)) {
				zlog(ZLOG_SYSERROR, "[pool %s] failed to initgroups(%s, %d)", wp->config->name, wp->config->user, wp->set_gid);
				return -1;
			}
			if (0 > setuid(wp->set_uid)) {
				zlog(ZLOG_SYSERROR, "[pool %s] failed to setuid(%d)", wp->config->name, wp->set_uid);
				return -1;
			}
		}
	}

#ifdef HAVE_PRCTL
	if (0 > prctl(PR_SET_DUMPABLE, 1, 0, 0, 0)) {
		zlog(ZLOG_SYSERROR, "[pool %s] failed to prctl(PR_SET_DUMPABLE)", wp->config->name);
	}
#endif

	if (0 > fpm_clock_init()) {
		return -1;
	}
	return 0;
}
/* }}} */

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.