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AUSCERT External Security Bulletin Redistribution
ESB-2022.1682
kernel security update
20 April 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2022-0492 CVE-2021-4155 CVE-2021-0920
CVE-2020-0466
Original Bulletin:
https://access.redhat.com/errata/RHSA-2022:1417
Comment: CVSS (Max): 7.8 CVE-2020-0466 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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Red Hat Security Advisory
Synopsis: Important: kernel security update
Advisory ID: RHSA-2022:1417-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:1417
Issue date: 2022-04-19
CVE Names: CVE-2020-0466 CVE-2021-0920 CVE-2021-4155
CVE-2022-0492
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 6
Extended Lifecycle 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 Server (v. 6 ELS) - i386, noarch, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6 ELS) - i386, s390x, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* kernel: use after free in eventpoll.c may lead to escalation of privilege
(CVE-2020-0466)
* kernel: Use After Free in unix_gc() which could result in a local
privilege escalation (CVE-2021-0920)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
(CVE-2021-4155)
* kernel: cgroups v1 release_agent feature may allow privilege escalation
(CVE-2022-0492)
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
The system must be rebooted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1920480 - CVE-2020-0466 kernel: use after free in eventpoll.c may lead to escalation of privilege
2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation
6. Package List:
Red Hat Enterprise Linux Server (v. 6 ELS):
Source:
kernel-2.6.32-754.47.1.el6.src.rpm
i386:
kernel-2.6.32-754.47.1.el6.i686.rpm
kernel-debug-2.6.32-754.47.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.47.1.el6.i686.rpm
kernel-debug-devel-2.6.32-754.47.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.47.1.el6.i686.rpm
kernel-devel-2.6.32-754.47.1.el6.i686.rpm
kernel-headers-2.6.32-754.47.1.el6.i686.rpm
perf-2.6.32-754.47.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.47.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.i686.rpm
noarch:
kernel-abi-whitelists-2.6.32-754.47.1.el6.noarch.rpm
kernel-doc-2.6.32-754.47.1.el6.noarch.rpm
kernel-firmware-2.6.32-754.47.1.el6.noarch.rpm
s390x:
kernel-2.6.32-754.47.1.el6.s390x.rpm
kernel-debug-2.6.32-754.47.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-754.47.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.47.1.el6.s390x.rpm
kernel-devel-2.6.32-754.47.1.el6.s390x.rpm
kernel-headers-2.6.32-754.47.1.el6.s390x.rpm
kernel-kdump-2.6.32-754.47.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-754.47.1.el6.s390x.rpm
perf-2.6.32-754.47.1.el6.s390x.rpm
perf-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
x86_64:
kernel-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debug-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.47.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.47.1.el6.i686.rpm
kernel-debug-devel-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.47.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.47.1.el6.x86_64.rpm
kernel-devel-2.6.32-754.47.1.el6.x86_64.rpm
kernel-headers-2.6.32-754.47.1.el6.x86_64.rpm
perf-2.6.32-754.47.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.47.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6 ELS):
i386:
kernel-debug-debuginfo-2.6.32-754.47.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.47.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.47.1.el6.i686.rpm
python-perf-2.6.32-754.47.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.i686.rpm
s390x:
kernel-debug-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.47.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
perf-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
python-perf-2.6.32-754.47.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.s390x.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.47.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.47.1.el6.x86_64.rpm
python-perf-2.6.32-754.47.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.47.1.el6.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-2020-0466
https://access.redhat.com/security/cve/CVE-2021-0920
https://access.redhat.com/security/cve/CVE-2021-4155
https://access.redhat.com/security/cve/CVE-2022-0492
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.
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