Home / mailings [RHSA-2022:7173-01] Important: kpatch-patch security update
Posted on 25 October 2022
RedHat===================================================================== Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2022:7173-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7173
Issue date: 2022-10-25
CVE Names: CVE-2021-3715 CVE-2022-2588
=====================================================================
1. Summary:
An update for kpatch-patch is now available for Red Hat Enterprise Linux
7.6 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 Server E4S (v. 7.6) - 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 in route4_change() in net/sched/cls_route.c
(CVE-2021-3715)
* kernel: a use-after-free in cls_route filter implementation may lead to
privilege escalation (CVE-2022-2588)
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/):
1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c
2114849 - CVE-2022-2588 kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation
6. Package List:
Red Hat Enterprise Linux Server E4S (v. 7.6):
Source:
kpatch-patch-3_10_0-957_84_1-1-6.el7.src.rpm
kpatch-patch-3_10_0-957_92_1-1-3.el7.src.rpm
kpatch-patch-3_10_0-957_94_1-1-2.el7.src.rpm
kpatch-patch-3_10_0-957_95_1-1-1.el7.src.rpm
kpatch-patch-3_10_0-957_97_1-1-1.el7.src.rpm
ppc64le:
kpatch-patch-3_10_0-957_84_1-1-6.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_84_1-debuginfo-1-6.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_92_1-1-3.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_92_1-debuginfo-1-3.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_94_1-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_94_1-debuginfo-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_95_1-1-1.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_95_1-debuginfo-1-1.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_97_1-1-1.el7.ppc64le.rpm
kpatch-patch-3_10_0-957_97_1-debuginfo-1-1.el7.ppc64le.rpm
x86_64:
kpatch-patch-3_10_0-957_84_1-1-6.el7.x86_64.rpm
kpatch-patch-3_10_0-957_84_1-debuginfo-1-6.el7.x86_64.rpm
kpatch-patch-3_10_0-957_92_1-1-3.el7.x86_64.rpm
kpatch-patch-3_10_0-957_92_1-debuginfo-1-3.el7.x86_64.rpm
kpatch-patch-3_10_0-957_94_1-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-957_94_1-debuginfo-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-957_95_1-1-1.el7.x86_64.rpm
kpatch-patch-3_10_0-957_95_1-debuginfo-1-1.el7.x86_64.rpm
kpatch-patch-3_10_0-957_97_1-1-1.el7.x86_64.rpm
kpatch-patch-3_10_0-957_97_1-debuginfo-1-1.el7.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-2021-3715
https://access.redhat.com/security/cve/CVE-2022-2588
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 2022 Red Hat, Inc.
