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Red Hat Enterprise Linux 9.0 RHSA-2023-3465-01 Important Kernel Fix

red hat
Calendar Grey June 6, 2023
Dist Redhat Esm H88
Canonical announces an important security patch for Ubuntu 22.04, targeting severe privilege elevation flaws.
An update for kernel is now available for Red Hat Enterprise Linux 9.0 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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
* kernel: udmabuf: improper validation of array index leading to local privilege escalation (CVE-2023-2008)
* kernel: use-after-free in Netfilter nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
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):
* Intel QAT Update - (kernel changes) (BZ#2176848)
* Significant performance drop for getrandom system call when FIPS is enabled (compared to RHEL 8) (BZ#2183477)
* Azure RHEL9 Backport upstream commit 93827a0a36396f2fd6368a54a020f420c8916e9b [KVM: VMX: Fix crash due to uninitialized current_vmcs] (BZ#2186824)
* kernel[-rt]: task deadline_test:1778 blocked for more than 622 seconds (BZ#2188657)

Topics%20covered

Topics Covered

security advisory kernel update critical privilege escalation bug fix kernel security red hat enterprise linux

References

https://access.redhat.com/security/cve/CVE-2023-0461 https://access.redhat.com/security/cve/CVE-2023-2008 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream EUS (v.9.0):
aarch64: bpftool-debuginfo-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-debug-debuginfo-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-debug-devel-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-debug-devel-matched-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-debuginfo-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-debuginfo-common-aarch64-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-devel-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-devel-matched-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-headers-5.14.0-70.58.1.el9_0.aarch64.rpm kernel-tools-debuginfo-5.14.0-70.58.1.el9_0.aarch64.rpm perf-5.14.0-70.58.1.el9_0.aarch64.rpm perf-debuginfo-5.14.0-70.58.1.el9_0.aarch64.rpm python3-perf-debuginfo-5.14.0-70.58.1.el9_0.aarch64.rpm
noarch: kernel-doc-5.14.0-70.58.1.el9_0.noarch.rpm
ppc64le: bpftool-debuginfo-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-debug-debuginfo-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-debug-devel-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-debug-devel-matched-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-debuginfo-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-debuginfo-common-ppc64le-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-devel-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-devel-matched-5.14.0-70.58.1.el9_0.ppc64le.rpm kernel-headers-5.14.0-70.58.1.el9_0.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3465-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3465
Issue date: 2023-06-06

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.0Extended 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 kernel update critical privilege escalation bug fix kernel security red hat enterprise linux

Relevant Releases Architectures

Red Hat CodeReady Linux Builder EUS (v.9.0) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream EUS (v.9.0) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS EUS (v.9.0) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2176192 - CVE-2023-0461 kernel: net/ulp: use-after-free in listening ULP sockets

2186862 - CVE-2023-2008 kernel: udmabuf: improper validation of array index leading to local privilege escalation

2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation

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