apt-get install intel-microcode
<reboot>
dmesg | grep microcode
[    0.000000] microcode: microcode updated early to revision 0x24, date = 2016-04-29
[    1.059632] microcode: sig=0x306d4, pf=0x40, revision=0x24
[    1.059713] microcode: Microcode Update Driver: v2.2.
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trey @ gépház