A kpatch-patch security update has been released for Red Hat Enterprise Linux 8.1.
RHSA-2021:3442-01: Important: kpatch-patch security update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2021:3442-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3442
Issue date: 2021-09-07
CVE Names: CVE-2021-3609 CVE-2021-3715 CVE-2021-37576
=====================================================================
1. Summary:
An update is now available for Red Hat Enterprise Linux 8.1 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. 8.1) - 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: race condition in net/can/bcm.c leads to local privilege
escalation (CVE-2021-3609)
* kernel: use-after-free in route4_change() in net/sched/cls_route.c
(CVE-2021-3715)
* kernel: powerpc: KVM guest OS users can cause host OS memory corruption
(CVE-2021-37576)
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/):
1971651 - CVE-2021-3609 kernel: race condition in net/can/bcm.c leads to local privilege escalation
1986506 - CVE-2021-37576 kernel: powerpc: KVM guest OS users can cause host OS memory corruption
1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c
6. Package List:
Red Hat Enterprise Linux BaseOS EUS (v. 8.1):
Source:
kpatch-patch-4_18_0-147_27_1-1-13.el8_1.src.rpm
kpatch-patch-4_18_0-147_32_1-1-11.el8_1.src.rpm
kpatch-patch-4_18_0-147_34_1-1-11.el8_1.src.rpm
kpatch-patch-4_18_0-147_38_1-1-10.el8_1.src.rpm
kpatch-patch-4_18_0-147_43_1-1-8.el8_1.src.rpm
kpatch-patch-4_18_0-147_44_1-1-7.el8_1.src.rpm
kpatch-patch-4_18_0-147_48_1-1-4.el8_1.src.rpm
kpatch-patch-4_18_0-147_51_1-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_51_2-1-2.el8_1.src.rpm
kpatch-patch-4_18_0-147_52_1-1-1.el8_1.src.rpm
ppc64le:
kpatch-patch-4_18_0-147_27_1-1-13.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-debuginfo-1-13.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_27_1-debugsource-1-13.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-1-11.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-debuginfo-1-11.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_32_1-debugsource-1-11.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-1-11.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-debuginfo-1-11.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_34_1-debugsource-1-11.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-1-10.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-debuginfo-1-10.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_38_1-debugsource-1-10.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_43_1-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_43_1-debuginfo-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_43_1-debugsource-1-8.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_44_1-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_44_1-debuginfo-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_44_1-debugsource-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_48_1-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_48_1-debuginfo-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_48_1-debugsource-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_1-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_1-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_1-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_2-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_2-debuginfo-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_2-debugsource-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_52_1-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_52_1-debuginfo-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_52_1-debugsource-1-1.el8_1.ppc64le.rpm
x86_64:
kpatch-patch-4_18_0-147_27_1-1-13.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-debuginfo-1-13.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_27_1-debugsource-1-13.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-1-11.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-debuginfo-1-11.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_32_1-debugsource-1-11.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-1-11.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-debuginfo-1-11.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_34_1-debugsource-1-11.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-1-10.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-debuginfo-1-10.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_38_1-debugsource-1-10.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_43_1-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_43_1-debuginfo-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_43_1-debugsource-1-8.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_44_1-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_44_1-debuginfo-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_44_1-debugsource-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_48_1-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_48_1-debuginfo-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_48_1-debugsource-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_1-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_1-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_1-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_2-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_2-debuginfo-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_2-debugsource-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_52_1-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_52_1-debuginfo-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_52_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-2021-3609
https://access.redhat.com/security/cve/CVE-2021-3715
https://access.redhat.com/security/cve/CVE-2021-37576
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
