Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2017.0022
Important: kernel security and bug fix update
4 January 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-8666
Reference: ASB-2016.0097
ESB-2016.2556
ESB-2016.2493
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2017-0004.html
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Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2017:0004-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0004.html
Issue date: 2017-01-03
CVE Names: CVE-2016-8666
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.1
Extended 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 ComputeNode EUS (v. 7.1) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.1) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.1) - ppc64, ppc64le, s390x, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* A flaw was found in the way the Linux kernel's networking subsystem
handled offloaded packets with multiple layers of encapsulation in the GRO
(Generic Receive Offload) code path. A remote attacker could use this flaw
to trigger unbounded recursion in the kernel that could lead to stack
corruption, resulting in a system crash. (CVE-2016-8666, Important)
Bug Fix(es):
* When a virtual machine (VM) with PCI-Passthrough interfaces was
recreated, the operating system rebooted. This update fixes the race
condition between the eventfd daemon and the virqfd daemon. As a result,
the operating system no longer reboots in the described situation.
(BZ#1391609)
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/):
1384991 - CVE-2016-8666 kernel: Remotely triggerable recursion in GRE code leading to kernel crash
6. Package List:
Red Hat Enterprise Linux ComputeNode EUS (v. 7.1):
Source:
kernel-3.10.0-229.46.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-229.46.1.el7.noarch.rpm
kernel-doc-3.10.0-229.46.1.el7.noarch.rpm
x86_64:
kernel-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debug-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.46.1.el7.x86_64.rpm
kernel-devel-3.10.0-229.46.1.el7.x86_64.rpm
kernel-headers-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.46.1.el7.x86_64.rpm
perf-3.10.0-229.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1):
x86_64:
kernel-debug-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
python-perf-3.10.0-229.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.1):
Source:
kernel-3.10.0-229.46.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-229.46.1.el7.noarch.rpm
kernel-doc-3.10.0-229.46.1.el7.noarch.rpm
ppc64:
kernel-3.10.0-229.46.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debug-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-229.46.1.el7.ppc64.rpm
kernel-devel-3.10.0-229.46.1.el7.ppc64.rpm
kernel-headers-3.10.0-229.46.1.el7.ppc64.rpm
kernel-tools-3.10.0-229.46.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-229.46.1.el7.ppc64.rpm
perf-3.10.0-229.46.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
s390x:
kernel-3.10.0-229.46.1.el7.s390x.rpm
kernel-debug-3.10.0-229.46.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-229.46.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-229.46.1.el7.s390x.rpm
kernel-devel-3.10.0-229.46.1.el7.s390x.rpm
kernel-headers-3.10.0-229.46.1.el7.s390x.rpm
kernel-kdump-3.10.0-229.46.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-229.46.1.el7.s390x.rpm
perf-3.10.0-229.46.1.el7.s390x.rpm
perf-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
x86_64:
kernel-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debug-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.46.1.el7.x86_64.rpm
kernel-devel-3.10.0-229.46.1.el7.x86_64.rpm
kernel-headers-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-229.46.1.el7.x86_64.rpm
perf-3.10.0-229.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.1):
Source:
kernel-3.10.0-229.46.1.ael7b.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-229.46.1.ael7b.noarch.rpm
kernel-doc-3.10.0-229.46.1.ael7b.noarch.rpm
ppc64le:
kernel-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-bootwrapper-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debug-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-devel-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-headers-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-tools-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-tools-libs-3.10.0-229.46.1.ael7b.ppc64le.rpm
perf-3.10.0-229.46.1.ael7b.ppc64le.rpm
perf-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
python-perf-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.1):
ppc64:
kernel-debug-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-229.46.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-229.46.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
python-perf-3.10.0-229.46.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.ppc64.rpm
s390x:
kernel-debug-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-229.46.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
perf-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
python-perf-3.10.0-229.46.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.s390x.rpm
x86_64:
kernel-debug-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-229.46.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
python-perf-3.10.0-229.46.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-229.46.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.1):
ppc64le:
kernel-debug-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debug-devel-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-229.46.1.ael7b.ppc64le.rpm
perf-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.rpm
python-perf-3.10.0-229.46.1.ael7b.ppc64le.rpm
python-perf-debuginfo-3.10.0-229.46.1.ael7b.ppc64le.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-2016-8666
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 2017 Red Hat, Inc.
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