Synopsis
Moderate: microcode_ctl security, bug fix and enhancement update
Type/Severity
Security Advisory: Moderate
Topic
Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available.
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) and Enhancement(s):
- Update Intel CPU microcode to microcode-20200602 release, addresses:
- 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.
- Change the URL to point to the GitHub repository since the microcode download section at Intel Download Center does not exist anymore.
- Narrow down SKL-SP/W/X blacklist to exclude Server/FPGA/Fabric segment
models.
- Re-generate initramfs not only for the currently running kernel,
but for several recently installed kernels as well.
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 - TUS 8.2 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)
CVEs
References
Vulmon