Installed intel-microcode.
Select the desired updates through # iucode_tool -S-l /lib/firmware/intel-ucode/*
iucode_tool: system has processor(s) with signature 0x000206c2
...
selected microcodes:
090/001: sig 0x000206c1, pf_mask 0x03, 2009-12-22, rev 0x0006, size 6144
091/001: sig 0x000206c2, pf_mask 0x03, 2018-05-08, r...