A microcode_ctl security, bug fix and enhancement update has been released for Red Hat Enterprise Linux 8.0.
RHSA-2020:2757-01: Moderate: microcode_ctl security, bug fix and enhancement update
=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: microcode_ctl security, bug fix and enhancement update
Advisory ID: RHSA-2020:2757-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2757
Issue date: 2020-06-29
CVE Names: CVE-2020-0543 CVE-2020-0548 CVE-2020-0549
=====================================================================
1. Summary:
An update for microcode_ctl is now available for Red Hat Enterprise Linux
8.0 Update Services for SAP Solutions.
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux BaseOS E4S (v. 8.0) - x86_64
3. 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 Fixes:
* Update Intel CPU microcode to microcode-20200609 release:
- Addition of 06-4d-08/0x01 (AVN B0/C0) microcode at revision 0x12d;
- Addition of 06-55-06/0xbf (CLX-SP B0) microcode at revision 0x4002f01;
- Addition of 06-7a-08/0x01 (GLK R0) microcode at revision 0x16;
- 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
(in intel-06-2d-07/intel-ucode/06-2d-07) 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 0xd4
up to 0xdc;
- Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000150
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 0x2000064
up to 0x2006906;
- Update of 06-55-07/0xbf (CLX-SP B1) microcode from revision 0x500002b
up to 0x5002f01;
- Update of 06-5e-03/0x36 (SKL-H/S R0/N0) microcode from revision 0xd4
up to 0xdc;
- Update of 06-7a-01/0x01 (GLK B0) microcode from revision 0x2e up to
0x32;
- 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 0xc6
up to 0xd6;
- Update of 06-8e-09/0xc0 (KBL-U/Y H0) microcode from revision 0xc6
up to 0xd6;
- Update of 06-8e-0a/0xc0 (CFL-U43e D0) microcode from revision 0xc6
up to 0xd6;
- Update of 06-8e-0b/0xd0 (WHL-U W0) microcode from revision 0xc6
up to 0xd6;
- Update of 06-8e-0c/0x94 (AML-Y42 V0, CML-Y42 V0, WHL-U V0) microcode
from revision 0xc6 up to 0xd6;
- Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode from
revision
0xc6 up to 0xd6;
- Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E3 U0) microcode from revision
0xc6
up to 0xd6;
- Update of 06-9e-0b/0x02 (CFL-S B0) microcode from revision 0xc6 up to
0xd6;
- Update of 06-9e-0c/0x22 (CFL-H/S P0) microcode from revision 0xae
up to 0xd6;
- Update of 06-9e-0d/0x22 (CFL-H R0) microcode from revision 0xc6 up to
0xd6.
- Update of 06-a6-00/0x80 (CML-U 6+2 A0) from revision 0xc6 up to 0xca.
* 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.
* Add 06-55-04 (SKL-X/W) caveat, enable it by default.
* Update stale posttrans dependency, add triggers for proper handling
of the debug kernel flavour along with kernel-rt.
* 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 to point to the GitHub repository since the microcode
download
section at Intel Download Center does not exist anymore.
* Avoid temporary file creation, used for here-documents in check_caveats.
4. 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
5. Bugs fixed ( https://bugzilla.redhat.com/):
1788786 - CVE-2020-0548 hw: Vector Register Data Sampling
1788788 - CVE-2020-0549 hw: L1D Cache Eviction Sampling
1827165 - CVE-2020-0543 hw: Special Register Buffer Data Sampling (SRBDS)
1848438 - [rhel-8.0.0] skylake (06-4e-03) microcode update hangs
1848501 - [rhel-8.0.0] Package microcode-20200609 release
6. Package List:
Red Hat Enterprise Linux BaseOS E4S (v. 8.0):
Source:
microcode_ctl-20180807a-2.20200609.1.el8_0.src.rpm
x86_64:
microcode_ctl-20180807a-2.20200609.1.el8_0.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-0543
https://access.redhat.com/security/cve/CVE-2020-0548
https://access.redhat.com/security/cve/CVE-2020-0549
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/solutions/5142691
https://access.redhat.com/solutions/l1d-cache-eviction-and-vector-register-sampling
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
