This microcode update provides the first set of fixes for Speculative Store Bypass (SSBD, Spectre v4, CVE-2018-3639) and Rogue System Register Read (RSRE, Spectre v3a, CVE-2018-3640) for Intel Sandybridge server, Ivy Bridge server, Haswell server, Skylake server, Broadwell server, a few HEDT Core i7/i9 models.
Included is also an AMD cpu microcode fix for family 15h Processor Revision ID 0x00610f01 missed in the MGASA-2018-0260 update.