RHSA-2025:7043 - Security Advisory

Topic

An update for microcode_ctl is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 and AMD processors.

Security Fix(es):

• microcode_ctl: Improper input validation in UEFI firmware (CVE-2024-28047)
• microcode_ctl: Insufficient granularity of access control in UEFI firmware (CVE-2024-39279)
• microcode_ctl: mproper initialization in UEFI firmware OutOfBandXML module (CVE-2024-31157)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 9 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.6 x86_64
• Red Hat Enterprise Linux Server - AUS 9.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64

Fixes

• BZ - 2345363 - CVE-2024-28047 microcode_ctl: Improper input validation in UEFI firmware
• BZ - 2345381 - CVE-2024-39279 microcode_ctl: Insufficient granularity of access control in UEFI firmware
• BZ - 2345421 - CVE-2024-31157 microcode_ctl: mproper initialization in UEFI firmware OutOfBandXML module
• RHEL-67336 - [RHEL 9] Update Intel CPU microcode to the latest version

CVEs

• CVE-2024-28047
• CVE-2024-31157
• CVE-2024-39279

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.6_release_notes/index