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RedHat: RHSA-2023-4815-01 Important: Kernel Bug Fix and Security Update

red hat
Calendar Grey August 29, 2023
Dist Redhat Esm H88
Kernel enhancement for CentOS addresses critical vulnerabilities and resolves various issues. System restart necessary for updates to take effect.
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: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)
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):
* Windows Server 2019 guest randomly pauses with "KVM: entry failed, hardware error 0x80000021", RHEL 8.8GA (BZ#2211657)
* rbd: avoid fast-diff corruption in snapshot-based mirroring, RHEL 8.9 (BZ#2216772)

Topics%20covered

Topics Covered

security advisory Red Hat bug fix important kernel out-of-bounds write OOB access

References

https://access.redhat.com/security/cve/CVE-2023-2124 https://access.redhat.com/security/cve/CVE-2023-3090 https://access.redhat.com/security/cve/CVE-2023-35788 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS AUS (v. 8.2):
Source: kernel-4.18.0-193.113.1.el8_2.src.rpm
noarch: kernel-abi-whitelists-4.18.0-193.113.1.el8_2.noarch.rpm kernel-doc-4.18.0-193.113.1.el8_2.noarch.rpm
x86_64: bpftool-4.18.0-193.113.1.el8_2.x86_64.rpm bpftool-debuginfo-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-core-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-cross-headers-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debug-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debug-core-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debug-debuginfo-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debug-devel-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debug-modules-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debug-modules-extra-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debuginfo-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-devel-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-headers-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-modules-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-modules-extra-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-tools-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-tools-debuginfo-4.18.0-193.113.1.el8_2.x86_64.rpm kernel-tools-libs-4.18.0-193.113.1.el8_2.x86_64.rpm perf-4.18.0-193.113.1.el8_2.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4815-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4815
Issue date: 2023-08-29

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 Red Hat bug fix important kernel out-of-bounds write OOB access

Relevant Releases Architectures

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

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

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

Bugs Fixed

2187439 - CVE-2023-2124 kernel: OOB access in the Linux kernel's XFS subsystem

2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()

2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb

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