KDE is a feature-rich graphical desktop environment for Linux and Unix-like Operating Systems. kimgio is the KDE image handler provided by kdelibs.
kimgio fails to properly validate input when handling PCX files.
By enticing a user to load a specially-crafted PCX image in a KDE application, an attacker could execute arbitrary code.
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