Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3887
kpatch-patch security update
16 November 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kpatch-patch
Publisher: Red Hat
Operating System: Red Hat
Linux variants
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-43267
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:4644
Comment: This advisory references vulnerabilities in the Linux kernel that
also affect distributions other than Red Hat. It is recommended that
administrators running Linux check for an updated version of the
kernel for their system.
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Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2021:4644-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4644
Issue date: 2021-11-15
CVE Names: CVE-2021-43267
=====================================================================
1. Summary:
An update is now available for Red Hat Enterprise Linux 8.4 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.8.4) - 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: Insufficient validation of user-supplied sizes for the MSG_CRYPTO
message type (CVE-2021-43267)
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/):
2020362 - CVE-2021-43267 kernel: Insufficient validation of user-supplied sizes for the MSG_CRYPTO message type
6. Package List:
Red Hat Enterprise Linux BaseOS EUS (v.8.4):
Source:
kpatch-patch-4_18_0-305-1-8.el8.src.rpm
kpatch-patch-4_18_0-305_10_2-1-5.el8_4.src.rpm
kpatch-patch-4_18_0-305_12_1-1-4.el8_4.src.rpm
kpatch-patch-4_18_0-305_17_1-1-3.el8_4.src.rpm
kpatch-patch-4_18_0-305_19_1-1-3.el8_4.src.rpm
kpatch-patch-4_18_0-305_25_1-1-2.el8_4.src.rpm
kpatch-patch-4_18_0-305_3_1-1-7.el8_4.src.rpm
kpatch-patch-4_18_0-305_7_1-1-6.el8_4.src.rpm
ppc64le:
kpatch-patch-4_18_0-305-1-8.el8.ppc64le.rpm
kpatch-patch-4_18_0-305-debuginfo-1-8.el8.ppc64le.rpm
kpatch-patch-4_18_0-305-debugsource-1-8.el8.ppc64le.rpm
kpatch-patch-4_18_0-305_10_2-1-5.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_10_2-debuginfo-1-5.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_10_2-debugsource-1-5.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_12_1-1-4.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_12_1-debuginfo-1-4.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_12_1-debugsource-1-4.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_17_1-1-3.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_17_1-debuginfo-1-3.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_17_1-debugsource-1-3.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_19_1-1-3.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_19_1-debuginfo-1-3.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_19_1-debugsource-1-3.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_25_1-1-2.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_25_1-debuginfo-1-2.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_25_1-debugsource-1-2.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_3_1-1-7.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_3_1-debuginfo-1-7.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_3_1-debugsource-1-7.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_7_1-1-6.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_7_1-debuginfo-1-6.el8_4.ppc64le.rpm
kpatch-patch-4_18_0-305_7_1-debugsource-1-6.el8_4.ppc64le.rpm
x86_64:
kpatch-patch-4_18_0-305-1-8.el8.x86_64.rpm
kpatch-patch-4_18_0-305-debuginfo-1-8.el8.x86_64.rpm
kpatch-patch-4_18_0-305-debugsource-1-8.el8.x86_64.rpm
kpatch-patch-4_18_0-305_10_2-1-5.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_10_2-debuginfo-1-5.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_10_2-debugsource-1-5.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_12_1-1-4.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_12_1-debuginfo-1-4.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_12_1-debugsource-1-4.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_17_1-1-3.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_17_1-debuginfo-1-3.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_17_1-debugsource-1-3.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_19_1-1-3.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_19_1-debuginfo-1-3.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_19_1-debugsource-1-3.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_25_1-1-2.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_25_1-debuginfo-1-2.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_25_1-debugsource-1-2.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_3_1-1-7.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_3_1-debuginfo-1-7.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_3_1-debugsource-1-7.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_7_1-1-6.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_7_1-debuginfo-1-6.el8_4.x86_64.rpm
kpatch-patch-4_18_0-305_7_1-debugsource-1-6.el8_4.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-2021-43267
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 2021 Red Hat, Inc.
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