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Alerts This Week
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Critical Security Fixes for Kernel in Red Hat Enterprise Linux 8.2

red hat
Calendar Grey April 4, 2023
Dist Redhat Esm H88
A significant kernel upgrade has been released for CentOS Linux. This notice tackles urgent security vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterpri...

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 caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
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):
* iavf: Fix updating statistics (BZ#2142509)
* RHEL8.4: Backport the new cgroup slab memory controller in v.5.9 (BZ#2164636)
* Windows Server 2019 guest randomly pauses with "KVM: entry failed, hardware error 0x80000021" (BZ#2166371)
* RHEL8.3: Backport upstream locking changes up to v5.6 (BZ#2170061)

Topics%20covered

Topics Covered

security advisory update red hat bug fix important kernel CVE issues

References

https://access.redhat.com/security/cve/CVE-2022-3564 https://access.redhat.com/security/cve/CVE-2023-0266 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS AUS (v. 8.2):
Source: kernel-4.18.0-193.105.1.el8_2.src.rpm
aarch64: bpftool-4.18.0-193.105.1.el8_2.aarch64.rpm bpftool-debuginfo-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-core-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-cross-headers-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debug-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debug-core-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debug-devel-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debug-modules-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debug-modules-extra-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-devel-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-headers-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-modules-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-modules-extra-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-tools-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.105.1.el8_2.aarch64.rpm kernel-tools-libs-4.18.0-193.105.1.el8_2.aarch64.rpm perf-4.18.0-193.105.1.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.105.1.el8_2.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:1559-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:1559
Issue date: 2023-04-04

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.2Advanced Update Support, Red Hat Enterprise Linux 8.2 TelecommunicationsUpdate Service, and Red Hat Enterprise Linux 8.2 Update Services for SAPSolutions.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 update red hat bug fix important kernel CVE issues

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

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

2163379 - CVE-2023-0266 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF

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