Issued:
2020-07-07
Updated:
2020-07-07

RHSA-2020:2842 - Security Advisory

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 7.6 Extended Update Support.

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

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):

  • 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.
  • Avoid find being SIGPIPE'd on early "grep -q" exit in the dracut script.
  • Re-generate initramfs not only for the currently running kernel,
    but for several recently installed kernels as well.
  • Change the URL in the intel-microcode2ucode.8 to point to the GitHub
    repository since the microcode download section at Intel Download Center
    does not exist anymore.

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 for x86_64 - Extended Update Support 7.6 x86_64
  • Red Hat Enterprise Linux EUS Compute Node 7.6 x86_64
  • Red Hat Enterprise Linux Server - AUS 7.6 x86_64
  • Red Hat Enterprise Linux Server - TUS 7.6 x86_64
  • Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.6 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 - 1849063 - [rhel-7.6.z] Enable SNB-EP caveat by default

CVEs

References

Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6

SRPM
microcode_ctl-2.1-47.14.el7_6.src.rpm SHA-256: 57a09df25155c9447926c3e16f8fce4f9c964d0416ce79a3b12aea758e50de4d
x86_64
microcode_ctl-2.1-47.14.el7_6.x86_64.rpm SHA-256: 06ed794edb26a2d7bcc6eef43e39d837e299b683c43fb33e5e9813e06d776a3b
microcode_ctl-debuginfo-2.1-47.14.el7_6.x86_64.rpm SHA-256: 09cee9b4b6079af3e984cda38c1479eb53d11362f2af0045362f0115c302a1ba

Red Hat Enterprise Linux EUS Compute Node 7.6

SRPM
microcode_ctl-2.1-47.14.el7_6.src.rpm SHA-256: 57a09df25155c9447926c3e16f8fce4f9c964d0416ce79a3b12aea758e50de4d
x86_64
microcode_ctl-2.1-47.14.el7_6.x86_64.rpm SHA-256: 06ed794edb26a2d7bcc6eef43e39d837e299b683c43fb33e5e9813e06d776a3b
microcode_ctl-debuginfo-2.1-47.14.el7_6.x86_64.rpm SHA-256: 09cee9b4b6079af3e984cda38c1479eb53d11362f2af0045362f0115c302a1ba

Red Hat Enterprise Linux Server - AUS 7.6

SRPM
microcode_ctl-2.1-47.14.el7_6.src.rpm SHA-256: 57a09df25155c9447926c3e16f8fce4f9c964d0416ce79a3b12aea758e50de4d
x86_64
microcode_ctl-2.1-47.14.el7_6.x86_64.rpm SHA-256: 06ed794edb26a2d7bcc6eef43e39d837e299b683c43fb33e5e9813e06d776a3b
microcode_ctl-debuginfo-2.1-47.14.el7_6.x86_64.rpm SHA-256: 09cee9b4b6079af3e984cda38c1479eb53d11362f2af0045362f0115c302a1ba

Red Hat Enterprise Linux Server - TUS 7.6

SRPM
microcode_ctl-2.1-47.14.el7_6.src.rpm SHA-256: 57a09df25155c9447926c3e16f8fce4f9c964d0416ce79a3b12aea758e50de4d
x86_64
microcode_ctl-2.1-47.14.el7_6.x86_64.rpm SHA-256: 06ed794edb26a2d7bcc6eef43e39d837e299b683c43fb33e5e9813e06d776a3b
microcode_ctl-debuginfo-2.1-47.14.el7_6.x86_64.rpm SHA-256: 09cee9b4b6079af3e984cda38c1479eb53d11362f2af0045362f0115c302a1ba

Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.6

SRPM
microcode_ctl-2.1-47.14.el7_6.src.rpm SHA-256: 57a09df25155c9447926c3e16f8fce4f9c964d0416ce79a3b12aea758e50de4d
x86_64
microcode_ctl-2.1-47.14.el7_6.x86_64.rpm SHA-256: 06ed794edb26a2d7bcc6eef43e39d837e299b683c43fb33e5e9813e06d776a3b
microcode_ctl-debuginfo-2.1-47.14.el7_6.x86_64.rpm SHA-256: 09cee9b4b6079af3e984cda38c1479eb53d11362f2af0045362f0115c302a1ba

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.