tmux is a terminal multiplexer.
A null pointer dereference issue was discovered in function window_pane_set_event in window.c in which allows attackers to cause denial of service or other unspecified impacts.
Manipulating tmux window state could result in a null pointer dereference.
There is no known workaround at this time.
All tmux users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-misc/tmux-3.4"