The IRC client irssi was updated to 0.8.20, fixing various bugs and security issues.
CVE-2016-7044: The unformat_24bit_color function in the format parsing
code in Irssi, when compiled with true-color enabled, allowed remote
attackers to cause a denial of service (heap corruption and crash)
via an incomplete 24bit color code.
CVE-2016-7045: The format_send_to_gui function in the format parsing
code in Irssi allowed remote attackers to cause a denial of service
(heap corruption and crash) via vectors involving the length of a string.