RHSA-2020:2706: Moderate: microcode_ctl security, bug fix and enhancement update

Security Fix(es): hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543) hw: L1D Cache Eviction Sampling (CVE-2020-0549) hw: Vector Register Data Sampling (CVE-2020-0548) For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer to the CVE page(s)listed in the References section.Bug Fix(es): Update Intel CPU microcode to microcode-20200609 release: Update of 06-2d-06/0x6d (SNB-E/EN/EP C1/M0) microcode from revision 0x61f up to 0x621; Update of 06-2d-07/0x6d (SNB-E/EN/EP C2/M1) microcode from revision 0x718 up to 0x71a; Update of 06-3c-03/0x32 (HSW C0) microcode from revision 0x27 up to 0x28; Update of 06-3d-04/0xc0 (BDW-U/Y E0/F0) microcode from revision 0x2e up to 0x2f; Update of 06-45-01/0x72 (HSW-U C0/D0) microcode from revision 0x25 up to 0x26; Update of 06-46-01/0x32 (HSW-H C0) microcode from revision 0x1b up to 0x1c; Update of 06-47-01/0x22 (BDW-H/Xeon E3 E0/G0) microcode from revision 0x21 up to 0x22; Update of 06-4e-03/0xc0 (SKL-U/Y D0) microcode from revision 0xd6 up to 0xdc; Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000151 up to 0x1000157; Update of 06-55-04/0xb7 (SKX-SP H0/M0/U0, SKX-D M1) microcode (in intel-06-55-04/intel-ucode/06-55-04) from revision 0x2000065 up to 0x2006906; Update of 06-55-06/0xbf (CLX-SP B0) microcode from revision 0x400002c up to 0x4002f01; Update of 06-55-07/0xbf (CLX-SP B1) microcode from revision 0x500002c up to 0x5002f01; Update of 06-5e-03/0x36 (SKL-H/S R0/N0) microcode from revision 0xd6 up to 0xdc; Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x46 up to 0x78; Update of 06-8e-09/0x10 (AML-Y22 H0) microcode from revision 0xca up to 0xd6; Update of 06-8e-09/0xc0 (KBL-U/Y H0) microcode from revision 0xca up to 0xd6; Update of 06-8e-0a/0xc0 (CFL-U43e D0) microcode from revision 0xca up to 0xd6; Update of 06-8e-0b/0xd0 (WHL-U W0) microcode from revision 0xca up to 0xd6; Update of 06-8e-0c/0x94 (AML-Y42 V0, CML-Y42 V0, WHL-U V0) microcode from revision 0xca up to 0xd6; Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode from revision 0xca up to 0xd6; Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E3 U0) microcode from revision 0xca up to 0xd6; Update of 06-9e-0b/0x02 (CFL-S B0) microcode from revision 0xca up to 0xd6; Update of 06-9e-0c/0x22 (CFL-H/S P0) microcode from revision 0xca up to 0xd6; Update of 06-9e-0d/0x22 (CFL-H R0) microcode from revision 0xca up to 0xd6. Do not update 06-4e-03 (SKL-U/Y) and 06-5e-03 (SKL-H/S/Xeon E3 v5) to revision 0xdc, use 0xd6 by default. Enable 06-2d-07 (SNB-E/EN/EP) caveat by default. Enable 06-55-04 (SKL-SP/X/W) caveat by default.