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Red Hat MRG 2 RHSA-2018:2165-01 Moderate: Kernel-RT Issues

red hat
Calendar Grey July 10, 2018
Dist Redhat Esm H88
Revised kernel-rt updates for Red Hat Enterprise MRG 2 address two significant security vulnerabilities and improve overall efficiency.
Updated kernel-rt packages that fix two security issues and add one enhancement are now available for Red Hat Enterprise MRG 2

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

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: Buffer over-read in keyring subsystem allows exposing potentially sensitive information to local attacker (CVE-2017-13305)
* Kernel: FPU state information leakage via lazy FPU restore (CVE-2018-3665)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank Julian Stecklina (Amazon.de), Thomas Prescher (cyberus-technology.de), and Zdenek Sojka (sysgo.com) for reporting CVE-2018-3665.
Enhancement(s):
* The kernel-rt packages have been upgraded to version 3.10.0-693.35.1.rt56.623, which provides a number of bug fixes over the previous version. (BZ#1579972)
Users of kernel-rt are advised to upgrade to these updated packages, which add this enhancement.
The system must be rebooted for this update to take effect.

Topics%20covered

Topics Covered

security advisory moderate red hat buffer over-read kernel-rt fpu leakage

References

https://access.redhat.com/security/cve/CVE-2017-13305 https://access.redhat.com/security/cve/CVE-2018-3665 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat MRG Realtime for RHEL 6 Server v.2:
Source: kernel-rt-3.10.0-693.35.1.rt56.625.el6rt.src.rpm
noarch: kernel-rt-doc-3.10.0-693.35.1.rt56.625.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.35.1.rt56.625.el6rt.noarch.rpm
x86_64: kernel-rt-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.35.1.rt56.625.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.35.1.rt56.625.el6rt.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:2165-01
Product: Red Hat Enterprise MRG for RHEL-6
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2165
Issue date: 2018-07-10

Topic

Updated kernel-rt packages that fix two security issues and add oneenhancement are now available for Red Hat Enterprise MRG 2.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat buffer over-read kernel-rt fpu leakage

Relevant Releases Architectures

Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

Bugs Fixed

1579972 - Update the kernel-rt sources with the latest 3.10 sources.

1581637 - CVE-2017-13305 kernel: Buffer over-read in keyring subsystem allows exposing potentially sensitive information to local attacker

1585011 - CVE-2018-3665 Kernel: FPU state information leakage via lazy FPU restore

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