KDE is a feature-rich graphical desktop environment for Linux and Unix-like Operating Systems. DCOP is KDE's simple IPC/RPC mechanism.
Sebastian Krahmer discovered that it is possible to stall the dcopserver of other users.
An attacker could exploit this to cause a local Denial of Service by stalling the dcopserver in the authentication process. As a result all desktop functionality relying on DCOP will cease to function.
There is no known workaround at this time.
All kdelibs users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose kde-base/kdelibs