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Red Hat Enterprise Linux 8 kpatch-patch Important Privilege Escalation RHSA-2023:3351-01

red hat
Calendar Grey June 3, 2023
Dist Redhat Esm H88
A significant notice has been issued for Red Hat Enterprise Linux 8 related to the modifications in kpatch-patch and their implications.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8

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

References

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

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kpatch-patch-4_18_0-477_10_1-1-1.el8_8.src.rpm
ppc64le: kpatch-patch-4_18_0-477_10_1-1-1.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_10_1-debuginfo-1-1.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_10_1-debugsource-1-1.el8_8.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-477_10_1-1-1.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_10_1-debuginfo-1-1.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_10_1-debugsource-1-1.el8_8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3351-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3351
Issue date: 2023-05-30

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.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 security issue kernel update privilege escalation Red Hat Enterprise Linux important kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - ppc64le, x86_64

Bugs Fixed

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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