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Red Hat: RHSA-2022-7338-01 Important Kernel-Rt Security Update

red hat
Calendar Grey November 2, 2022
Dist Redhat Esm H88
Kernel-rt stability and security patches released for Red Hat Enterprise Linux, tackling critical weaknesses. For more information, review the specifics.
An update for kernel-rt is now available for Red Hat Enterprise Linux 7

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* A use-after-free in cls_route filter implementation may lead to privilege escalation (CVE-2022-2588)
* RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)
* Branch Type Confusion (non-retbleed) (CVE-2022-23825)
* Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)
* Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)
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):
* Update to the latest RHEL7.9.z18 source tree (BZ#2117337)

Topics%20covered

Topics Covered

security advisory red hat privilege escalation bug fix memory corruption important kernel-rt

References

https://access.redhat.com/security/cve/CVE-2022-2588 https://access.redhat.com/security/cve/CVE-2022-23816 https://access.redhat.com/security/cve/CVE-2022-23825 https://access.redhat.com/security/cve/CVE-2022-26373 https://access.redhat.com/security/cve/CVE-2022-29900 https://access.redhat.com/security/cve/CVE-2022-29901 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/solutions/6971358

Package List

Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-1160.80.1.rt56.1225.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1160.80.1.rt56.1225.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.80.1.rt56.1225.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:7338-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7338
Issue date: 2022-11-02

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.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 memory corruption important kernel-rt

Relevant Releases Architectures

Red Hat Enterprise Linux for Real Time (v. 7) - noarch, x86_64

Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64

Bugs Fixed

2090226 - CVE-2022-23816 CVE-2022-29900 hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions

2103148 - CVE-2022-29901 hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions

2103153 - CVE-2022-23825 hw: cpu: AMD: Branch Type Confusion (non-retbleed)

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

2115065 - CVE-2022-26373 hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions

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