man-db is a man replacement that utilizes BerkeleyDB instead of flat files.
A root privilege escalation through setuid executable and cron job has been discovered in man-db. Please review the CVE identifier referenced below for details.
A local user with access to the man user or group can elevate privileges to root.
There is no known workaround at this time.
All man-db users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/man-db-2.8.5"