ucode-intel was updated to the 20180807 release. For the listed CPU chipsets this fixes CVE-2018-3640 , and is part of the mitigations for CVE-2018-3639 and CVE-2018-3646 . Processor Identifier Version Products Model Stepping F-MO-S/PI Old- gt;New ---- new platforms ---------------------------------------- WSM-EP/WS U1 6-2c-2/03 0000001f Xeon E/L/X56xx, W36xx NHM-EX D0 6-2e-6/04 0000000d Xeon E/L/X65xx/75xx BXT C0 6-5c-2/01 00000014 Atom T5500/5700 APL E0 6-5c-a/03 0000000c Atom x5-E39xx DVN B0 6-5f-1/01 00000024 Atom C3xxx ---- updated platforms ------------------------------------ NHM-EP/WS D0 6-1a-5/03 00000019- gt;0000001d Xeon E/L/X/W55xx NHM B1 6-1e-5/13 00000007- gt;0000000a Core i7-8xx, i5-7xx; Xeon L3426, X24xx WSM B1 6-25-2/12 0000000e- gt;00000011 Core i7-6xx, i5-6xx/4xxM, i3-5xx/3xxM, Pentium G69xx, Celeon P45xx; Xeon L3406 WSM K0 6-25-5/92 00000004- gt;00000007 Core i7-6xx, i5-6xx/5xx/4xx, i3-5xx/3xx, Pentium G69xx/P6xxx/U5xxx, Celeron P4xxx/U3xxx SNB D2 6-2a-7/12 0000002d- gt;0000002e Core Gen2; Xeon E3 WSM-EX A2 6-2f-2/05 00000037- gt;0000003b Xeon E7 IVB E2 6-3a-9/12 0000001f- gt;00000020 Core Gen3 Mobile HSW-H/S/E3 Cx/Dx 6-3c-3/32 00000024- gt;00000025 Core Gen4 Desktop; Xeon E3 v3 BDW-U/Y E/F 6-3d-4/c0 0000002a- gt;0000002b Core Gen5 Mobile HSW-ULT Cx/Dx 6-45-1/72 00000023- gt;00000024 Core Gen4 Mobile and derived Pentium/Celeron HSW-H Cx 6-46-1/32 00000019- gt;0000001a Core Extreme i7-5xxxX BDW-H/E3 E/G 6-47-1/22 0000001d- gt;0000001e Core i5-5xxxR/C, i7-5xxxHQ/EQ; Xeon E3 v4 SKL-U/Y D0 6-4e-3/c0 000000c2- gt;000000c6 Core Gen6 Mobile BDX-DE V1 6-56-2/10 00000015- gt;00000017 Xeon D-1520/40 BDX-DE V2/3 6-56-3/10 07000012- gt;07000013 Xeon D-1518/19/21/27/28/31/33/37/41/48, Pentium D1507/08/09/17/19 BDX-DE Y0 6-56-4/10 0f000011- gt;0f000012 Xeon D-1557/59/67/71/77/81/87 APL D0 6-5c-9/03 0000002c- gt;00000032 Pentium N/J4xxx, Celeron N/J3xxx, Atom x5/7-E39xx SKL-H/S/E3 R0 6-5e-3/36 000000c2- gt;000000c6 Core Gen6; Xeon E3 v5