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Red Hat Enterprise Linux 8.2 RHSA-2022:7279-01 Important: Kernel Update

red hat
Calendar Grey November 1, 2022
Dist Redhat Esm H88
Critical vulnerability and patch released for Red Hat Enterprise Linux 8.2 to enhance kernel security and resolve bugs.
An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and...

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

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)
* hw: cpu: Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
* hw: cpu: Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
* hw: cpu: Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)
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):
* RHEL8.6[64TB/240c Denali]:" vmcore failed, _exitcode:139" error observed while capturing vmcore during fadump after memory remove. incomplete vmcore is captured. (BZ#2107491)

Topics%20covered

Topics Covered

security advisory Red Hat privilege escalation bug fix important kernel use-after-free

References

https://access.redhat.com/security/cve/CVE-2022-2588 https://access.redhat.com/security/cve/CVE-2022-21123 https://access.redhat.com/security/cve/CVE-2022-21125 https://access.redhat.com/security/cve/CVE-2022-21166 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS AUS (v. 8.2):
Source: kernel-4.18.0-193.93.1.el8_2.src.rpm
aarch64: bpftool-4.18.0-193.93.1.el8_2.aarch64.rpm bpftool-debuginfo-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-core-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-cross-headers-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debug-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debug-core-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debug-devel-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debug-modules-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debug-modules-extra-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-devel-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-headers-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-modules-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-modules-extra-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-tools-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.93.1.el8_2.aarch64.rpm kernel-tools-libs-4.18.0-193.93.1.el8_2.aarch64.rpm perf-4.18.0-193.93.1.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.93.1.el8_2.aarch64.rpm python3-perf-4.18.0-193.93.1.el8_2.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:7279-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7279
Issue date: 2022-11-01

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.2Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.2Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 UpdateServices for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat privilege escalation bug fix important kernel use-after-free

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS AUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS E4S (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS TUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2090237 - CVE-2022-21123 hw: cpu: Incomplete cleanup of multi-core shared buffers (aka SBDR)

2090240 - CVE-2022-21125 hw: cpu: Incomplete cleanup of microarchitectural fill buffers (aka SBDS)

2090241 - CVE-2022-21166 hw: cpu: Incomplete cleanup in specific special register write operations (aka DRPW)

2114849 - CVE-2022-2588 kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation

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