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Red Hat Security Advisory
Synopsis: Moderate: kernel-rt security, and enhancement update
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
CVE Names: CVE-2017-13305 CVE-2018-3665
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1. Summary:
Updated kernel-rt packages that fix two security issues and add one
enhancement are now available for Red Hat Enterprise MRG 2.
Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 MRG Realtime for RHEL 6 Server v.2 – noarch, 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: 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.
4. 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
5. Bugs fixed (https://bugzilla.redhat.com/):
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
6. 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/
7. 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
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2018 Red Hat, Inc.
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