Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2022.6494
kernel-rt security and bug fix update
15 December 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-rt
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2022-43945 CVE-2022-29901 CVE-2022-29900
CVE-2022-26373 CVE-2022-23825 CVE-2022-23816
CVE-2022-21166 CVE-2022-21125 CVE-2022-21123
CVE-2022-2959 CVE-2022-2639 CVE-2022-1158
Original Bulletin:
https://access.redhat.com/errata/RHSA-2022:8974
Comment: CVSS (Max): 7.8 CVE-2022-2639 (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-rt security and bug fix update
Advisory ID: RHSA-2022:8974-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:8974
Issue date: 2022-12-13
CVE Names: CVE-2022-1158 CVE-2022-2639 CVE-2022-2959
CVE-2022-21123 CVE-2022-21125 CVE-2022-21166
CVE-2022-23816 CVE-2022-23825 CVE-2022-26373
CVE-2022-29900 CVE-2022-29901 CVE-2022-43945
=====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0
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 Real Time EUS (v.9.0) - x86_64
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) - x86_64
3. Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region
(CVE-2022-1158)
* kernel: openvswitch: integer underflow leads to out-of-bounds write in
reserve_sfa_size() (CVE-2022-2639)
* kernel: watch queue race condition can lead to privilege escalation
(CVE-2022-2959)
* kernel: nfsd buffer overflow by RPC message over TCP with garbage data
(CVE-2022-43945)
* hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)
(CVE-2022-21123)
* hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka
SBDS) (CVE-2022-21125)
* hw: cpu: incomplete clean-up in specific special register write
operations (aka DRPW) (CVE-2022-21166)
* hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return
Instructions (CVE-2022-23816, CVE-2022-29900)
* hw: cpu: AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)
* hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions
(CVE-2022-26373)
* hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return
Instructions (CVE-2022-29901)
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.
Bug Fix(es):
* kernel-rt: update RT source tree to the latest RHEL-9.0.z5 Batch
(BZ#2137580)
* [DELL EMC 9.0-RT BUG] System is not booting into RT Kernel with perc12
[kernel-rt] (BZ#2139864)
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/):
2069793 - CVE-2022-1158 kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region
2084479 - CVE-2022-2639 kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()
2090226 - CVE-2022-23816 CVE-2022-29900 hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions
2090237 - CVE-2022-21123 hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)
2090240 - CVE-2022-21125 hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS)
2090241 - CVE-2022-21166 hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)
2103148 - CVE-2022-29901 hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions
2103153 - CVE-2022-23825 hw: cpu: AMD: Branch Type Confusion (non-retbleed)
2103681 - CVE-2022-2959 kernel: watch queue race condition can lead to privilege escalation
2115065 - CVE-2022-26373 hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions
2141752 - CVE-2022-43945 kernel: nfsd buffer overflow by RPC message over TCP with garbage data
6. Package List:
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0):
Source:
kernel-rt-5.14.0-70.36.1.rt21.108.el9_0.src.rpm
x86_64:
kernel-rt-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-kvm-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-kvm-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
Red Hat Enterprise Linux Real Time EUS (v.9.0):
Source:
kernel-rt-5.14.0-70.36.1.rt21.108.el9_0.src.rpm
x86_64:
kernel-rt-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-core-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-core-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-debuginfo-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-devel-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-modules-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debug-modules-extra-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debuginfo-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-devel-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-modules-5.14.0-70.36.1.rt21.108.el9_0.x86_64.rpm
kernel-rt-modules-extra-5.14.0-70.36.1.rt21.108.el9_0.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-2022-1158
https://access.redhat.com/security/cve/CVE-2022-2639
https://access.redhat.com/security/cve/CVE-2022-2959
https://access.redhat.com/security/cve/CVE-2022-21123
https://access.redhat.com/security/cve/CVE-2022-21125
https://access.redhat.com/security/cve/CVE-2022-21166
https://access.redhat.com/security/cve/CVE-2022-23816
https://access.redhat.com/security/cve/CVE-2022-23825
https://access.redhat.com/security/cve/CVE-2022-26373
https://access.redhat.com/security/cve/CVE-2022-29900
https://access.redhat.com/security/cve/CVE-2022-29901
https://access.redhat.com/security/cve/CVE-2022-43945
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/solutions/6971358
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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