Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2024.1660
kpatch-patch security update
20 March 2024
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AusCERT Security Bulletin Summary
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Product: kpatch-patch
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2023-4921 CVE-2024-0646
Original Bulletin:
https://access.redhat.com/errata/RHSA-2024:1368
Comment: CVSS (Max): 7.8 CVE-2023-4921 (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-2024:1368
Product: Red Hat Enterprise Linux BaseOS EUS (v.8.8)
Advisory URL: https://access.redhat.com/errata/RHSA-2024:1368
Issue date: 2024-03-19
CVE Names: CVE-2023-4921 CVE-2024-0646
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1. Summary:
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.8
Extended Update Support.
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 EUS (v.8.8) - 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: ktls overwrites readonly memory pages when using function splice with
a ktls socket as destination (CVE-2024-0646)
* kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)
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/):
2245514 - CVE-2023-4921 - kernel: use-after-free in sch_qfq network scheduler
2253908 - CVE-2024-0646 - kernel: ktls overwrites readonly memory pages when
using function splice with a ktls socket as destination
6. Package List:
Red Hat Enterprise Linux BaseOS EUS (v.8.8)
ppc64le:
kpatch-patch-4_18_0-477_27_1-0:1-3.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_27_1-debuginfo-0:1-3.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_27_1-debugsource-0:1-3.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_36_1-0:1-2.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_36_1-debuginfo-0:1-2.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_36_1-debugsource-0:1-2.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_43_1-0:1-1.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_43_1-debuginfo-0:1-1.el8_8.ppc64le.rpm
kpatch-patch-4_18_0-477_43_1-debugsource-0:1-1.el8_8.ppc64le.rpm
Source:
kpatch-patch-4_18_0-477_27_1-0:1-3.el8_8.src.rpm
kpatch-patch-4_18_0-477_36_1-0:1-2.el8_8.src.rpm
kpatch-patch-4_18_0-477_43_1-0:1-1.el8_8.src.rpm
x86_64:
kpatch-patch-4_18_0-477_27_1-0:1-3.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_27_1-debuginfo-0:1-3.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_27_1-debugsource-0:1-3.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_36_1-0:1-2.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_36_1-debuginfo-0:1-2.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_36_1-debugsource-0:1-2.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_43_1-0:1-1.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_43_1-debuginfo-0:1-1.el8_8.x86_64.rpm
kpatch-patch-4_18_0-477_43_1-debugsource-0:1-1.el8_8.x86_64.rpm
7. References:
https://access.redhat.com/security/cve/CVE-2023-4921
https://access.redhat.com/security/cve/CVE-2024-0646
https://access.redhat.com/security/updates/classification/#important
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