Issued:
2021-06-08
Updated:
2021-06-08

RHSA-2021:2305 - 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 7.

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

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

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing7x86_64
Red Hat Enterprise Linux Workstation7x86_64
Red Hat Enterprise Linux Server7x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support7x86_64
Red Hat Enterprise Linux Desktop7x86_64

Updated Packages

  • microcode_ctl-2.1-73.9.el7_9.x86_64.rpm
  • microcode_ctl-debuginfo-2.1-73.9.el7_9.x86_64.rpm
  • microcode_ctl-2.1-73.9.el7_9.src.rpm

Fixes

CVEs

References

Additional information