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AUSCERT External Security Bulletin Redistribution
ESB-2020.1729.2
kernel-rt security and bug fix update
18 May 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-rt
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 8
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-10711 CVE-2020-2732
Reference: ESB-2020.1688
ESB-2020.1673
ESB-2020.1669
ESB-2020.1666
ESB-2020.0954
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:2171
Revision History: May 18 2020: May 18 2020: Sending with new PGP key
May 15 2020: Initial Release
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Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2020:2171-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2171
Issue date: 2020-05-14
CVE Names: CVE-2020-2732 CVE-2020-10711
=====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
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 (v. 8) - x86_64
Red Hat Enterprise Linux Real Time for NFV (v. 8) - 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: NetLabel: null pointer dereference while receiving CIPSO packet
with null category may cause kernel panic (CVE-2020-10711)
* Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access
sensitive L1 resources (CVE-2020-2732)
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-8.2.z source tree
(BZ#1831781)
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/):
1805135 - CVE-2020-2732 Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources
1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source:
kernel-rt-4.18.0-193.1.2.rt13.53.el8_2.src.rpm
x86_64:
kernel-rt-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-kvm-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source:
kernel-rt-4.18.0-193.1.2.rt13.53.el8_2.src.rpm
x86_64:
kernel-rt-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-core-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-core-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-devel-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-modules-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debuginfo-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-devel-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-modules-4.18.0-193.1.2.rt13.53.el8_2.x86_64.rpm
kernel-rt-modules-extra-4.18.0-193.1.2.rt13.53.el8_2.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-2020-2732
https://access.redhat.com/security/cve/CVE-2020-10711
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 2020 Red Hat, Inc.
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