LTris is a Tetris clone.
LTris is vulnerable to a buffer overflow when reading the global highscores file.
By modifying the global highscores file a malicious user could trick another user to execute arbitrary code.
There is no known workaround at this time.
All LTris users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=games-puzzle/ltris-1.0.10"