Red Hat Security Advisory 2021-2308-01 - The microcode_ctl packages provide microcode updates for Intel. Issues addressed include information leakage and privilege escalation vulnerabilities.
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Red Hat Security Advisory
Synopsis: Important: microcode_ctl security, bug fix and enhancement update
Advisory ID: RHSA-2021:2308-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2308
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 (v. 8) - 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 (v. 8):
Source:
microcode_ctl-20210216-1.20210525.1.el8_4.src.rpm
x86_64:
microcode_ctl-20210216-1.20210525.1.el8_4.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@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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