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RedHat: RHSA-2023-3853-01 Important: Kpatch-Patch Privilege Escalation

red hat
Calendar Grey June 27, 2023
Dist Redhat Esm H88
Vital Red Hat bulletin regarding kpatch-patch underscores urgent security vulnerabilities within the Enterprise Linux kernel that require immediate attention.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

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

Summary

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation (CVE-2023-1281)
* kernel: netfilter: use-after-free in 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.

Topics%20covered

Topics Covered

security advisory update privilege escalation Red Hat Enterprise Linux important kernel kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2023-1281 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS E4S (v. 8.1):
Source: kpatch-patch-4_18_0-147_77_1-1-6.el8_1.src.rpm kpatch-patch-4_18_0-147_78_1-1-5.el8_1.src.rpm kpatch-patch-4_18_0-147_80_1-1-4.el8_1.src.rpm kpatch-patch-4_18_0-147_81_1-1-3.el8_1.src.rpm kpatch-patch-4_18_0-147_83_1-1-2.el8_1.src.rpm
ppc64le: kpatch-patch-4_18_0-147_77_1-1-6.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_77_1-debuginfo-1-6.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_77_1-debugsource-1-6.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_78_1-1-5.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_78_1-debuginfo-1-5.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_78_1-debugsource-1-5.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_80_1-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_80_1-debuginfo-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_80_1-debugsource-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_81_1-1-3.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_81_1-debuginfo-1-3.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_81_1-debugsource-1-3.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_83_1-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_83_1-debuginfo-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_83_1-debugsource-1-2.el8_1.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-147_77_1-1-6.el8_1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3853-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3853
Issue date: 2023-06-27

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux8.1 Update Services 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 update privilege escalation Red Hat Enterprise Linux important kernel kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS E4S (v. 8.1) - ppc64le, x86_64

Bugs Fixed

2181847 - CVE-2023-1281 kernel: tcindex: use-after-free vulnerability in traffic control index filter allows 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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