Red Hat Security Advisory 2018-1349-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a denial of service vulnerability.
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Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2018:1349-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:1349
Issue date: 2018-05-08
CVE Names: CVE-2018-8897
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1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 6.4
Advanced 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 Server AUS (v. 6.4) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* hw: cpu: speculative execution permission faults handling (CVE-2017-5754)
* Kernel: error in exception handling leads to DoS (CVE-2018-8897)
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 Google Project Zero for reporting CVE-2017-5754
and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting
CVE-2018-8897.
Bug Fix(es):
* The kernel build requirements have been updated to the GNU Compiler
Collection (GCC) compiler version that has the support for Retpolines. The
Retpolines mechanism is a software construct that leverages specific
knowledge of the underlying hardware to mitigate the branch target
injection, also known as Spectre variant 2 vulnerability described in
CVE-2017-5715. (BZ#1554251)
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/):
1519781 - CVE-2017-5754 hw: cpu: speculative execution permission faults handling
1567074 - CVE-2018-8897 Kernel: error in exception handling leads to DoS
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 6.4):
Source:
kernel-2.6.32-358.88.2.el6.src.rpm
noarch:
kernel-doc-2.6.32-358.88.2.el6.noarch.rpm
kernel-firmware-2.6.32-358.88.2.el6.noarch.rpm
x86_64:
kernel-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debug-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debug-devel-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.88.2.el6.x86_64.rpm
kernel-devel-2.6.32-358.88.2.el6.x86_64.rpm
kernel-headers-2.6.32-358.88.2.el6.x86_64.rpm
perf-2.6.32-358.88.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.4):
Source:
kernel-2.6.32-358.88.2.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.88.2.el6.x86_64.rpm
perf-debuginfo-2.6.32-358.88.2.el6.x86_64.rpm
python-perf-2.6.32-358.88.2.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-358.88.2.el6.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-2018-8897
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/speculativeexecution
https://access.redhat.com/security/cve/CVE-2017-5754
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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