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Red Hat: RHSA-2023:1220-01 Important Update for Kernel-RT

red hat
Calendar Grey March 14, 2023
Dist Redhat Esm H88
Ubuntu's essential security notice outlines required upgrades for kernel-lt, tackling significant vulnerabilities and threats.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 Extended Update Support

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):
* kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)
* kernel: stack overflow in do_proc_dointvec and proc_skip_spaces (CVE-2022-4378)
* kernel: net: CPU soft lockup in TC mirred egress-to-ingress action (CVE-2022-4269)
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-rt: update RT source tree to the RHEL-8.4.z15 source tree. (BZ#2162415)

Topics%20covered

Topics Covered

security advisory Red Hat software patch system update kernel-rt real time kernel

References

https://access.redhat.com/security/cve/CVE-2022-3564 https://access.redhat.com/security/cve/CVE-2022-4269 https://access.redhat.com/security/cve/CVE-2022-4378 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Real Time for NFV EUS (v.8.4):
Source: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-devel-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-kvm-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-modules-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.8.4):
Source: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.src.rpm
x86_64: kernel-rt-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm kernel-rt-core-4.18.0-305.82.1.rt7.154.el8_4.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:1220-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:1220
Issue date: 2023-03-14

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4Extended Update Support.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 software patch system update kernel-rt real time kernel

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time EUS (v.8.4) - x86_64

Red Hat Enterprise Linux Real Time for NFV EUS (v.8.4) - x86_64

Bugs Fixed

2150272 - CVE-2022-4269 kernel: net: CPU soft lockup in TC mirred egress-to-ingress action

2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c

2152548 - CVE-2022-4378 kernel: stack overflow in do_proc_dointvec and proc_skip_spaces

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