V字龍 (Vdragon) says to Ubuntu 台灣社群intel-microcode (3.20180312.0~ubuntu16.04.1) xenial-security; urgency=medium SECURITY UPDATE: New upstream microcode data file 20180312 to provide IBRS/IBPB/STIBP microcode support for Spectre variant 2 mitigationat Fri, Mar 30, 2018 10:42 AM