A realtime Linux kernel security update has been released for Red Hat Enterprise Linux 8 to address the new Intel CPU vulnerabilities.

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Red Hat Security Advisory

Synopsis: Important: kernel-rt security update
Advisory ID: RHSA-2019:3833-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3833
Issue date: 2019-11-12
CVE Names: CVE-2018-12207 CVE-2019-0154 CVE-2019-11135
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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):

* hw: Machine Check Error on Page Size Change (IFU) (CVE-2018-12207)

* hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)

* hw: Intel GPU Denial Of Service while accessing MMIO in lower power state
(CVE-2019-0154)

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/):

1646768 - CVE-2018-12207 hw: Machine Check Error on Page Size Change (IPU)
1724393 - CVE-2019-0154 hw: Intel GPU Denial Of Service while accessing MMIO in lower power state
1753062 - CVE-2019-11135 hw: TSX Transaction Asynchronous Abort (TAA)

6. Package List:

Red Hat Enterprise Linux Real Time for NFV (v. 8):

Source:
kernel-rt-4.18.0-147.0.2.rt24.94.el8_1.src.rpm

x86_64:
kernel-rt-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-core-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-core-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-devel-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-modules-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-devel-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-kvm-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-kvm-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-modules-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-modules-extra-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm

Red Hat Enterprise Linux Real Time (v. 8):

Source:
kernel-rt-4.18.0-147.0.2.rt24.94.el8_1.src.rpm

x86_64:
kernel-rt-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-core-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-core-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-devel-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-kvm-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-modules-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-devel-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-kvm-debuginfo-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-modules-4.18.0-147.0.2.rt24.94.el8_1.x86_64.rpm
kernel-rt-modules-extra-4.18.0-147.0.2.rt24.94.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-2018-12207
https://access.redhat.com/security/cve/CVE-2019-0154
https://access.redhat.com/security/cve/CVE-2019-11135
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/ifu-page-mce
https://access.redhat.com/solutions/tsx-asynchronousabort
https://access.redhat.com/solutions/i915-graphics

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.