A kpatch-patch security update has been released for Red Hat Enterprise Linux 8.1.

[RHSA-2023:4516-01] Important: kpatch-patch security update

=====================================================================
Red Hat Security Advisory

Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2023:4516-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4516
Issue date: 2023-08-08
CVE Names: CVE-2023-1829 CVE-2023-3090 CVE-2023-35788
=====================================================================

1. Summary:

An update for kpatch-patch-4_18_0-147_78_1, kpatch-patch-4_18_0-147_80_1,
kpatch-patch-4_18_0-147_81_1, kpatch-patch-4_18_0-147_83_1, and
kpatch-patch-4_18_0-147_85_1 is now available for Red Hat Enterprise Linux
8.1. Update Services for SAP Solutions.

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 E4S (v. 8.1) - 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 Linux Kernel traffic control
index filter (CVE-2023-1829)

* kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
(CVE-2023-3090)

* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
(CVE-2023-35788)

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/):

2188470 - CVE-2023-1829 kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter
2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()
2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb

6. Package List:

Red Hat Enterprise Linux BaseOS E4S (v. 8.1):

Source:
kpatch-patch-4_18_0-147_78_1-1-6.el8_1.src.rpm
kpatch-patch-4_18_0-147_80_1-1-5.el8_1.src.rpm
kpatch-patch-4_18_0-147_81_1-1-4.el8_1.src.rpm
kpatch-patch-4_18_0-147_83_1-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_85_1-1-1.el8_1.src.rpm

ppc64le:
kpatch-patch-4_18_0-147_78_1-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_78_1-debuginfo-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_78_1-debugsource-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_80_1-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_80_1-debuginfo-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_80_1-debugsource-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_81_1-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_81_1-debuginfo-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_81_1-debugsource-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_83_1-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_83_1-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_83_1-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_85_1-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_85_1-debuginfo-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_85_1-debugsource-1-1.el8_1.ppc64le.rpm

x86_64:
kpatch-patch-4_18_0-147_78_1-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_78_1-debuginfo-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_78_1-debugsource-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_80_1-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_80_1-debuginfo-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_80_1-debugsource-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_81_1-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_81_1-debuginfo-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_81_1-debugsource-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_83_1-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_83_1-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_83_1-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_85_1-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_85_1-debuginfo-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_85_1-debugsource-1-1.el8_1.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-2023-1829
https://access.redhat.com/security/cve/CVE-2023-3090
https://access.redhat.com/security/cve/CVE-2023-35788
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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