sudo allows a system administrator to give users the ability to run commands as other users. Access to commands may also be granted on a range to hosts.
An error in sudo may allow unintended IPv4 hosts to be granted access to commands.
A local attacker could gain escalated privileges.
There is no known workaround at this time.
All sudo users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.5_p1"