RHSA-2020:2831: Important: kernel security and bug fix update

Published Jul 7, 2020
·
Updated

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888) 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.Bug Fix(es): kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840674)

Affected Software

18 affected componentsFixes available
redhat/kernel<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-abi-whitelists<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-debug<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-debug-debuginfo<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-debug-devel<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-debuginfo<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-devel<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-doc<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-headers<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-tools<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-tools-debuginfo<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-tools-libs<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/kernel-tools-libs-devel<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/perf<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/perf-debuginfo<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/python-perf<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7
redhat/python-perf-debuginfo<3.10.0-327.89.1.el7
3.10.0-327.89.1.el7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  2. Upgrade

    Upgrade redhat/kernel-abi-whitelists to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  3. Upgrade

    Upgrade redhat/kernel-debug to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  4. Upgrade

    Upgrade redhat/kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  5. Upgrade

    Upgrade redhat/kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  6. Upgrade

    Upgrade redhat/kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  7. Upgrade

    Upgrade redhat/kernel-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  8. Upgrade

    Upgrade redhat/kernel-doc to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  9. Upgrade

    Upgrade redhat/kernel-headers to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  10. Upgrade

    Upgrade redhat/kernel-tools to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  11. Upgrade

    Upgrade redhat/kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  12. Upgrade

    Upgrade redhat/kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  13. Upgrade

    Upgrade redhat/kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  14. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  15. Upgrade

    Upgrade redhat/perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  16. Upgrade

    Upgrade redhat/python-perf to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7
  17. Upgrade

    Upgrade redhat/python-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.10.0-327.89.1.el7

Event History

Aug 9, 2026
Advisory Published
via Red Hat·06:39 PM
Data Sourced
via Red Hat·06:39 PM
RemedyDescriptionAffected Software

Frequently Asked Questions

1

What is the severity of RHSA-2020:2831?

The severity of RHSA-2020:2831 is classified as important.

2

How do I fix RHSA-2020:2831?

To fix RHSA-2020:2831, update the kernel package to version 3.10.0-327.89.1.el7 or later.

3

What does the vulnerability RHSA-2020:2831 involve?

RHSA-2020:2831 involves a vulnerability in the kernel that allows access to disabled MMIO space, potentially leading to a denial of service scenario.

4

Which packages are affected by RHSA-2020:2831?

Affected packages by RHSA-2020:2831 include the kernel, kernel-debug, kernel-devel, and various kernel tool packages.

5

Is a system reboot required after resolving RHSA-2020:2831?

Yes, a system reboot is usually required after updating the kernel to fully apply the security fixes from RHSA-2020:2831.

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