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AUSCERT External Security Bulletin Redistribution
ESB-2023.3528
kpatch-patch security update
22 June 2023
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kpatch-patch
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2023-32233 CVE-2023-2235
Original Bulletin:
https://access.redhat.com/errata/RHSA-2023:3705
Comment: CVSS (Max): 7.8 CVE-2023-32233 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2023:3705-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3705
Issue date: 2023-06-21
CVE Names: CVE-2023-2235 CVE-2023-32233
=====================================================================
1. Summary:
An update for kpatch-patch is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux BaseOS (v. 9) - ppc64le, x86_64
3. Description:
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: use-after-free vulnerability in the perf_group_detach function of
the Linux Kernel Performance Events (CVE-2023-2235)
* 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.
4. 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
5. Bugs fixed (https://bugzilla.redhat.com/):
2192589 - CVE-2023-2235 kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events
2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation
6. Package List:
Red Hat Enterprise Linux BaseOS (v. 9):
Source:
kpatch-patch-5_14_0-284_11_1-1-1.el9_2.src.rpm
ppc64le:
kpatch-patch-5_14_0-284_11_1-1-1.el9_2.ppc64le.rpm
kpatch-patch-5_14_0-284_11_1-debuginfo-1-1.el9_2.ppc64le.rpm
kpatch-patch-5_14_0-284_11_1-debugsource-1-1.el9_2.ppc64le.rpm
x86_64:
kpatch-patch-5_14_0-284_11_1-1-1.el9_2.x86_64.rpm
kpatch-patch-5_14_0-284_11_1-debuginfo-1-1.el9_2.x86_64.rpm
kpatch-patch-5_14_0-284_11_1-debugsource-1-1.el9_2.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/
7. References:
https://access.redhat.com/security/cve/CVE-2023-2235
https://access.redhat.com/security/cve/CVE-2023-32233
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2023 Red Hat, Inc.
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