Issued:

2021-06-08

Updated:

2021-06-08

RHSA-2021:2299 - Important: microcode_ctl security, bug fix and enhancement update

Synopsis

Important: microcode_ctl security, bug fix and enhancement update

Type/Severity

Security Advisory Important

Topic

An update for microcode_ctl is now available for Red Hat Enterprise Linux 6.

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.

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

• Do not use "grep -q" in a pipe in check_caveats.

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

Updated Packages

• microcode_ctl-1.17-33.33.el6_10.src.rpm
• microcode_ctl-1.17-33.33.el6_10.x86_64.rpm
• microcode_ctl-debuginfo-1.17-33.33.el6_10.i686.rpm
• microcode_ctl-debuginfo-1.17-33.33.el6_10.x86_64.rpm
• microcode_ctl-1.17-33.33.el6_10.i686.rpm

Fixes

• This content is not included.BZ - 1962650
• This content is not included.BZ - 1962666
• This content is not included.BZ - 1962702
• This content is not included.BZ - 1962722

CVEs

• CVE-2020-24489
• CVE-2020-24511
• CVE-2020-24512
• CVE-2020-24513

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.