Synopsis

Moderate: microcode_ctl security, bug fix and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

An update for microcode_ctl is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The microcode_ctl packages provide microcode updates for Intel and AMD processors.

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 CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es) and Enhancement(s):

• Update Intel CPU microcode to microcode-20200602 release, addresses:
  
• 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 06-8e-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.
  
• Update Intel CPU microcode to microcode-20200520 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 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x46
  up to 0x78.
  

(BZ#1839193)

• Narrow down SKL-SP/W/X blacklist to exclude Server/FPGA/Fabric segment
  models. (BZ#1835555)

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64

Fixes

• BZ - 1788786 - CVE-2020-0548 hw: Vector Register Data Sampling
• BZ - 1788788 - CVE-2020-0549 hw: L1D Cache Eviction Sampling
• BZ - 1827165 - CVE-2020-0543 hw: Special Register Buffer Data Sampling (SRBDS)
• BZ - 1835555 - [RHEL 6] Narrow down the SKX (SKL-SP/X/W/D) microcode blacklist
• BZ - 1839193 - [RHEL 6] Package microcode-20200520 release

CVEs

• CVE-2020-0543
• CVE-2020-0548
• CVE-2020-0549

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/solutions/5142751
• https://access.redhat.com/solutions/5142691

Red Hat Enterprise Linux Server 6

SRPM
microcode_ctl-1.17-33.26.el6_10.src.rpm	SHA-256: a3231498d7e4248258291e00cebc87f10557830cdc6fd95e3be73169670b81ca
x86_64
microcode_ctl-1.17-33.26.el6_10.x86_64.rpm	SHA-256: fda67d8ca97ef8a9b147eb682f834c0e2eec2e684da817f452a123312a2db812
microcode_ctl-debuginfo-1.17-33.26.el6_10.x86_64.rpm	SHA-256: 5a9bedede3c3ecf1b1489ccc988e5850b3998e42c9fcd900ea58b9c7247deafc
i386
microcode_ctl-1.17-33.26.el6_10.i686.rpm	SHA-256: 501c99d971b71295b0e984ca11d3813ea0b22bd60d646a371f83e2ba8426e24e
microcode_ctl-debuginfo-1.17-33.26.el6_10.i686.rpm	SHA-256: 522d02753e5c7ab5a90b9961a78fd2af2d7696fede7358f22a6aa9f62528da14

Red Hat Enterprise Linux Workstation 6

SRPM
microcode_ctl-1.17-33.26.el6_10.src.rpm	SHA-256: a3231498d7e4248258291e00cebc87f10557830cdc6fd95e3be73169670b81ca
x86_64
microcode_ctl-1.17-33.26.el6_10.x86_64.rpm	SHA-256: fda67d8ca97ef8a9b147eb682f834c0e2eec2e684da817f452a123312a2db812
microcode_ctl-debuginfo-1.17-33.26.el6_10.x86_64.rpm	SHA-256: 5a9bedede3c3ecf1b1489ccc988e5850b3998e42c9fcd900ea58b9c7247deafc
i386
microcode_ctl-1.17-33.26.el6_10.i686.rpm	SHA-256: 501c99d971b71295b0e984ca11d3813ea0b22bd60d646a371f83e2ba8426e24e
microcode_ctl-debuginfo-1.17-33.26.el6_10.i686.rpm	SHA-256: 522d02753e5c7ab5a90b9961a78fd2af2d7696fede7358f22a6aa9f62528da14

Red Hat Enterprise Linux Desktop 6

SRPM
microcode_ctl-1.17-33.26.el6_10.src.rpm	SHA-256: a3231498d7e4248258291e00cebc87f10557830cdc6fd95e3be73169670b81ca
x86_64
microcode_ctl-1.17-33.26.el6_10.x86_64.rpm	SHA-256: fda67d8ca97ef8a9b147eb682f834c0e2eec2e684da817f452a123312a2db812
microcode_ctl-debuginfo-1.17-33.26.el6_10.x86_64.rpm	SHA-256: 5a9bedede3c3ecf1b1489ccc988e5850b3998e42c9fcd900ea58b9c7247deafc
i386
microcode_ctl-1.17-33.26.el6_10.i686.rpm	SHA-256: 501c99d971b71295b0e984ca11d3813ea0b22bd60d646a371f83e2ba8426e24e
microcode_ctl-debuginfo-1.17-33.26.el6_10.i686.rpm	SHA-256: 522d02753e5c7ab5a90b9961a78fd2af2d7696fede7358f22a6aa9f62528da14

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
microcode_ctl-1.17-33.26.el6_10.src.rpm	SHA-256: a3231498d7e4248258291e00cebc87f10557830cdc6fd95e3be73169670b81ca
x86_64
microcode_ctl-1.17-33.26.el6_10.x86_64.rpm	SHA-256: fda67d8ca97ef8a9b147eb682f834c0e2eec2e684da817f452a123312a2db812
microcode_ctl-debuginfo-1.17-33.26.el6_10.x86_64.rpm	SHA-256: 5a9bedede3c3ecf1b1489ccc988e5850b3998e42c9fcd900ea58b9c7247deafc