RHSA-2021:2305 — Security Advisory
Red Hat Security Advisory: microcode_ctl security, bug fix and enhancement update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · June 9, 2021
Updated · October 9, 2026
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