First published: Tue Jul 07 2020(Updated: )
Security Fix(es):<br><li> hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)</li> <li> hw: L1D Cache Eviction Sampling (CVE-2020-0549)</li> <li> hw: Vector Register Data Sampling (CVE-2020-0548)</li> For more details about the security issue(s), including the impact, a CVSS<br>score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.<br>Bug Fix(es):<br><li> Update Intel CPU microcode to microcode-20200609 release:</li> <li> Update of 06-2d-06/0x6d (SNB-E/EN/EP C1/M0) microcode from revision 0x61f</li> up to 0x621;<br><li> Update of 06-2d-07/0x6d (SNB-E/EN/EP C2/M1) microcode from revision 0x718</li> up to 0x71a;<br><li> Update of 06-3c-03/0x32 (HSW C0) microcode from revision 0x27 up to 0x28;</li> <li> Update of 06-3d-04/0xc0 (BDW-U/Y E0/F0) microcode from revision 0x2e</li> up to 0x2f;<br><li> Update of 06-45-01/0x72 (HSW-U C0/D0) microcode from revision 0x25</li> up to 0x26;<br><li> Update of 06-46-01/0x32 (HSW-H C0) microcode from revision 0x1b up to 0x1c;</li> <li> Update of 06-47-01/0x22 (BDW-H/Xeon E3 E0/G0) microcode from revision 0x21</li> up to 0x22;<br><li> Update of 06-4e-03/0xc0 (SKL-U/Y D0) microcode from revision 0xd6</li> up to 0xdc;<br><li> Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000151</li> up to 0x1000157;<br><li> Update of 06-55-04/0xb7 (SKX-SP H0/M0/U0, SKX-D M1) microcode</li> (in intel-06-55-04/intel-ucode/06-55-04) from revision 0x2000065<br> up to 0x2006906;<br><li> Update of 06-55-06/0xbf (CLX-SP B0) microcode from revision 0x400002c</li> up to 0x4002f01;<br><li> Update of 06-55-07/0xbf (CLX-SP B1) microcode from revision 0x500002c</li> up to 0x5002f01;<br><li> Update of 06-5e-03/0x36 (SKL-H/S R0/N0) microcode from revision 0xd6</li> up to 0xdc;<br><li> Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x46</li> up to 0x78;<br><li> Update of 06-8e-09/0x10 (AML-Y22 H0) microcode from revision 0xca</li> up to 0xd6;<br><li> Update of 06-8e-09/0xc0 (KBL-U/Y H0) microcode from revision 0xca</li> up to 0xd6;<br><li> Update of 06-8e-0a/0xc0 (CFL-U43e D0) microcode from revision 0xca</li> up to 0xd6;<br><li> Update of 06-8e-0b/0xd0 (WHL-U W0) microcode from revision 0xca</li> up to 0xd6;<br><li> Update of 06-8e-0c/0x94 (AML-Y42 V0, CML-Y42 V0, WHL-U V0) microcode</li> from revision 0xca up to 0xd6;<br><li> Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode from revision</li> 0xca up to 0xd6;<br><li> Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E3 U0) microcode from revision 0xca</li> up to 0xd6;<br><li> Update of 06-9e-0b/0x02 (CFL-S B0) microcode from revision 0xca up to 0xd6;</li> <li> Update of 06-9e-0c/0x22 (CFL-H/S P0) microcode from revision 0xca</li> up to 0xd6;<br><li> Update of 06-9e-0d/0x22 (CFL-H R0) microcode from revision 0xca up to 0xd6.</li> <li> Do not update 06-4e-03 (SKL-U/Y) and 06-5e-03 (SKL-H/S/Xeon E3 v5) to revision</li> 0xdc, use 0xd6 by default.<br><li> Enable 06-2d-07 (SNB-E/EN/EP) caveat by default.</li> <li> Enable 06-55-04 (SKL-SP/X/W) caveat by default.</li> <li> Avoid find being SIGPIPE'd on early "grep -q" exit in the dracut script.</li> <li> Re-generate initramfs not only for the currently running kernel,</li> but for several recently installed kernels as well.<br><li> Change the URL in the intel-microcode2ucode.8 to point to the GitHub</li> repository since the microcode download section at Intel Download Center<br> does not exist anymore.
Affected Software | Affected Version | How to fix |
---|---|---|
Microcode | =microcode-20200609 |
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RHSA-2020:2842 addresses multiple hardware vulnerabilities classified as medium to high severity.
To fix RHSA-2020:2842, apply the recommended security updates provided by your software vendor.
RHSA-2020:2842 addresses vulnerabilities related to Special Register Buffer Data Sampling (CVE-2020-0543), L1D Cache Eviction Sampling (CVE-2020-0549), and Vector Register Data Sampling (CVE-2020-0548).
RHSA-2020:2842 affects systems that contain vulnerable hardware configurations susceptible to data sampling attacks.
There are temporary mitigations available, but applying the patch is the recommended approach for full protection against RHSA-2020:2842.