The router advertisement daemon (radvd) before 1.8.2 does not properly handle errors in the privsep_init function, which causes the radvd daemon to run as root and has an unspecified impact.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-3562
https://access.redhat.com/security/cve/CVE-2011-3603