Issued:

2021-08-09

Updated:

2021-08-09

RHSA-2021:3027 - 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 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.

Description

The microcode_ctl packages provide microcode updates for Intel.

Security Fix(es):

• hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)

• hw: Vector Register Data Sampling (CVE-2020-0548)

• hw: L1D Cache Eviction Sampling (CVE-2020-0549)

• 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 issue in Intel SGX via RAPL interface (CVE-2020-8695)

• hw: Vector Register Leakage-Active (CVE-2020-8696)

• hw: Fast forward store predictor (CVE-2020-8698)

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-20210216-1.20210608.1.el8_4.x86_64.rpm
• microcode_ctl-20210216-1.20210608.1.el8_4.src.rpm

Fixes

• This content is not included.BZ - 1788786
• This content is not included.BZ - 1788788
• This content is not included.BZ - 1827165
• This content is not included.BZ - 1828583
• This content is not included.BZ - 1890355
• This content is not included.BZ - 1890356
• This content is not included.BZ - 1962650
• This content is not included.BZ - 1962702
• This content is not included.BZ - 1962722
• This content is not included.BZ - 1972325
• This content is not included.BZ - 1972328

CVEs

• CVE-2020-0543
• CVE-2020-0548
• CVE-2020-0549
• CVE-2020-8695
• CVE-2020-8696
• CVE-2020-8698
• CVE-2020-24489
• CVE-2020-24511
• CVE-2020-24512

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.