Bug 1962722 (CVE-2020-24512)

Summary:	CVE-2020-24512 hw: observable timing discrepancy in some Intel Processors
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	esyr, security-response-team, skozina
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	Observable timing discrepancy in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-09 03:04:16 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1962723, 1962724, 1962725, 1962726, 1962727, 1962728, 1962729, 1962730, 1962731, 1962732, 1962733, 1962734
Bug Blocks:	1962646

Description Petr Matousek 2021-05-20 14:26:06 UTC

Certain optimizations on some Intel processors target “trivial data value” cache-lines, such as all-zero value cache-lines. Such optimizations may lead to changes in cache-allocation or write-back behavior for such cache-lines. It may be possible for a local attacker to distinguish some cases of trivial-data-cache-lines from non-trivial-data cache-lines by inferring cache state using cache timing methods.

Comment 2 errata-xmlrpc 2021-06-09 00:27:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6 Extended Lifecycle Support

Via RHSA-2021:2299 https://access.redhat.com/errata/RHSA-2021:2299

Comment 3 errata-xmlrpc 2021-06-09 00:38:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Advanced Update Support

Via RHSA-2021:2302 https://access.redhat.com/errata/RHSA-2021:2302

Comment 4 errata-xmlrpc 2021-06-09 01:04:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Advanced Update Support

Via RHSA-2021:2300 https://access.redhat.com/errata/RHSA-2021:2300

Comment 5 errata-xmlrpc 2021-06-09 01:09:32 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:2306 https://access.redhat.com/errata/RHSA-2021:2306

Comment 6 errata-xmlrpc 2021-06-09 01:41:32 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:2307 https://access.redhat.com/errata/RHSA-2021:2307

Comment 7 errata-xmlrpc 2021-06-09 01:56:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:2308 https://access.redhat.com/errata/RHSA-2021:2308

Comment 8 errata-xmlrpc 2021-06-09 02:02:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Advanced Update Support
  Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.4 Telco Extended Update Support

Via RHSA-2021:2301 https://access.redhat.com/errata/RHSA-2021:2301

Comment 9 errata-xmlrpc 2021-06-09 02:13:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Advanced Update Support
  Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.6 Telco Extended Update Support

Via RHSA-2021:2303 https://access.redhat.com/errata/RHSA-2021:2303

Comment 10 errata-xmlrpc 2021-06-09 02:14:50 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.7 Extended Update Support

Via RHSA-2021:2304 https://access.redhat.com/errata/RHSA-2021:2304

Comment 11 errata-xmlrpc 2021-06-09 02:15:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:2305 https://access.redhat.com/errata/RHSA-2021:2305

Comment 12 Product Security DevOps Team 2021-06-09 03:04:16 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-24512

Comment 13 errata-xmlrpc 2021-08-09 09:51:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:3027 https://access.redhat.com/errata/RHSA-2021:3027

Comment 14 errata-xmlrpc 2021-08-09 10:09:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:3028 https://access.redhat.com/errata/RHSA-2021:3028

Comment 16 errata-xmlrpc 2021-08-10 13:40:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.7 Extended Update Support

Via RHSA-2021:3029 https://access.redhat.com/errata/RHSA-2021:3029

Comment 17 errata-xmlrpc 2021-08-17 08:30:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:3176 https://access.redhat.com/errata/RHSA-2021:3176

Comment 18 errata-xmlrpc 2021-08-24 09:54:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Advanced Update Support
  Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.4 Telco Extended Update Support

Via RHSA-2021:3255 https://access.redhat.com/errata/RHSA-2021:3255

Comment 19 errata-xmlrpc 2021-08-31 07:56:46 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Advanced Update Support

Via RHSA-2021:3323 https://access.redhat.com/errata/RHSA-2021:3323

Comment 20 errata-xmlrpc 2021-08-31 08:04:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Advanced Update Support

Via RHSA-2021:3322 https://access.redhat.com/errata/RHSA-2021:3322

Comment 21 errata-xmlrpc 2021-08-31 08:24:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Advanced Update Support
  Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 7.6 Telco Extended Update Support

Via RHSA-2021:3317 https://access.redhat.com/errata/RHSA-2021:3317

Comment 22 errata-xmlrpc 2021-08-31 09:22:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:3364 https://access.redhat.com/errata/RHSA-2021:3364