Irssi 1.1.x before 1.1.2 has a use after free when hidden lines are expired from the scroll buffer.Referenceshttps://irssi.org/security/irssi_sa_2019_01.txthttps://irssi.org/NEWS/#v1-1-2https://github.com/irssi/irssi/pull/948https://usn.ubuntu.com/3862-1/
