Openswan is an implementation of IPsec for Linux.
Two vulnerabilities have been found in Openswan:
A remote authenticated attacker or a local attacker may be able to cause a Denial of Service condition.
There is no known workaround at this time.
All Openswan users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/openswan-2.6.37"
NOTE: This is a legacy GLSA. Updates for all affected architectures are available since November 10, 2011. It is likely that your system is already no longer affected by this issue.