The Tar program provides the ability to create and manipulate tar archives.
It was discovered that GNU Tar had a memory leak when processing archive headers.
A remote attacker could entice a user to open a specially crafted archive using Tar, possibly resulting in a Denial of Service condition.
There is no known workaround at this time.
All Tar users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/tar-1.34"