[RHSA-2021:2306-01] Important: microcode_ctl security, bug fix and enhancement update

[Security announcements for all Red Hat products and services.]

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                   Red Hat Security Advisory

Synopsis:          Important: microcode_ctl security, bug fix and enhancement update
Advisory ID:       RHSA-2021:2306-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:2306
Issue date:        2021-06-08
CVE Names:         CVE-2020-24489 CVE-2020-24511 CVE-2020-24512 
                   CVE-2020-24513 
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1. Summary:

An update for microcode_ctl is now available for Red Hat Enterprise Linux
8.

Red Hat Product Security has rated this update as having a security impact
of Important. 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 EUS (v. 8.1) - x86_64

3. Description:

The microcode_ctl packages provide microcode updates for Intel.

Security Fix(es):

* hw: vt-d related privilege escalation (CVE-2020-24489)

* hw: improper isolation of shared resources in some Intel Processors
(CVE-2020-24511)

* hw: observable timing discrepancy in some Intel Processors
(CVE-2020-24512)

* hw: information disclosure on some Intel Atom processors (CVE-2020-24513)

Bug Fix(es) and Enhancement(s):

* Update Intel CPU microcode to microcode-20210525 release

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/):

1962650 - CVE-2020-24489 hw: vt-d related privilege escalation
1962666 - CVE-2020-24513 hw: information disclosure on some Intel Atom processors
1962702 - CVE-2020-24511 hw: improper isolation of shared resources in some Intel Processors
1962722 - CVE-2020-24512 hw: observable timing discrepancy in some Intel Processors

6. Package List:

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):

Source:
microcode_ctl-20190618-1.20210525.1.el8_1.src.rpm

x86_64:
microcode_ctl-20190618-1.20210525.1.el8_1.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-2020-24489
https://access.redhat.com/security/cve/CVE-2020-24511
https://access.redhat.com/security/cve/CVE-2020-24512
https://access.redhat.com/security/cve/CVE-2020-24513
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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