A kpatch-patch security update has been released for Red Hat Enterprise Linux 8.1.
RHSA-2022:0851-01: Important: kpatch-patch security update
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update
Advisory ID: RHSA-2022:0851-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0851
Issue date: 2022-03-14
CVE Names: CVE-2021-0920 CVE-2021-4028 CVE-2021-4083
CVE-2022-0330 CVE-2022-0492 CVE-2022-22942
=====================================================================
1. Summary:
An update for kpatch-patch 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 in unix_gc() which could result in a local
privilege escalation (CVE-2021-0920)
* kernel: use-after-free in RDMA listen() (CVE-2021-4028)
* kernel: fget: check that the fd still exists after getting a ref to it
(CVE-2021-4083)
* kernel: possible privileges escalation due to missing TLB flush
(CVE-2022-0330)
* kernel: cgroups v1 release_agent feature may allow privilege escalation
(CVE-2022-0492)
* kernel: failing usercopy allows for use-after-free exploitation
(CVE-2022-22942)
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/):
2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()
2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it
2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush
2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation
2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation
6. Package List:
Red Hat Enterprise Linux BaseOS E4S (v. 8.1):
Source:
kpatch-patch-4_18_0-147_44_1-1-10.el8_1.src.rpm
kpatch-patch-4_18_0-147_48_1-1-7.el8_1.src.rpm
kpatch-patch-4_18_0-147_51_1-1-6.el8_1.src.rpm
kpatch-patch-4_18_0-147_51_2-1-5.el8_1.src.rpm
kpatch-patch-4_18_0-147_52_1-1-4.el8_1.src.rpm
kpatch-patch-4_18_0-147_54_2-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_56_1-1-3.el8_1.src.rpm
kpatch-patch-4_18_0-147_57_1-1-2.el8_1.src.rpm
kpatch-patch-4_18_0-147_59_1-1-1.el8_1.src.rpm
ppc64le:
kpatch-patch-4_18_0-147_44_1-1-10.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_44_1-debuginfo-1-10.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_44_1-debugsource-1-10.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_48_1-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_48_1-debuginfo-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_48_1-debugsource-1-7.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_1-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_1-debuginfo-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_1-debugsource-1-6.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_2-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_2-debuginfo-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_51_2-debugsource-1-5.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_52_1-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_52_1-debuginfo-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_52_1-debugsource-1-4.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_54_2-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_54_2-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_54_2-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_56_1-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_56_1-debuginfo-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_56_1-debugsource-1-3.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_57_1-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_57_1-debuginfo-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_57_1-debugsource-1-2.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_59_1-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_59_1-debuginfo-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_59_1-debugsource-1-1.el8_1.ppc64le.rpm
x86_64:
kpatch-patch-4_18_0-147_44_1-1-10.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_44_1-debuginfo-1-10.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_44_1-debugsource-1-10.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_48_1-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_48_1-debuginfo-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_48_1-debugsource-1-7.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_1-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_1-debuginfo-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_1-debugsource-1-6.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_2-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_2-debuginfo-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_51_2-debugsource-1-5.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_52_1-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_52_1-debuginfo-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_52_1-debugsource-1-4.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_54_2-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_54_2-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_54_2-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_56_1-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_56_1-debuginfo-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_56_1-debugsource-1-3.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_57_1-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_57_1-debuginfo-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_57_1-debugsource-1-2.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_59_1-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_59_1-debuginfo-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_59_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-2021-0920
https://access.redhat.com/security/cve/CVE-2021-4028
https://access.redhat.com/security/cve/CVE-2021-4083
https://access.redhat.com/security/cve/CVE-2022-0330
https://access.redhat.com/security/cve/CVE-2022-0492
https://access.redhat.com/security/cve/CVE-2022-22942
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 2022 Red Hat, Inc.
