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Red Hat Enterprise Linux 8.4 RHSA-2023-3461-01 Important Kernel Update

red hat
Calendar Grey June 6, 2023
Dist Redhat Esm H88
New kernel release ready for Red Hat 8.4 featuring critical security enhancements and bug corrections.
An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 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: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
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):
* Ethernet Port Configuration Tool (EPCT) not supported with in-tree ice driver (BZ#2176867)
* Proactively Backport MM fixes for el8.5 - 2nd round (BZ#2188306)
* kernel[-rt]: task deadline_test:2526 blocked for more than 600 seconds. (BZ#2188626)
* Dying percpu kworkers cause issues on isolated CPUs [rhel-8] (BZ#2189598)

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux important kernel CVE use-after-free

References

https://access.redhat.com/security/cve/CVE-2022-42896 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS AUS (v.8.4):
Source: kernel-4.18.0-305.91.1.el8_4.src.rpm
aarch64: bpftool-4.18.0-305.91.1.el8_4.aarch64.rpm bpftool-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-core-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-cross-headers-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debug-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debug-core-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debug-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debug-devel-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debug-modules-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debug-modules-extra-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-devel-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-headers-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-modules-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-modules-extra-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-tools-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-tools-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm kernel-tools-libs-4.18.0-305.91.1.el8_4.aarch64.rpm perf-4.18.0-305.91.1.el8_4.aarch64.rpm perf-debuginfo-4.18.0-305.91.1.el8_4.aarch64.rpm python3-perf-4.18.0-305.91.1.el8_4.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3461-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3461
Issue date: 2023-06-06

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.4Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 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 bug fix Red Hat Enterprise Linux important kernel CVE use-after-free

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS AUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS E4S (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS TUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

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