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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2016:2076-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-2076.html
Issue date:        2016-10-18
CVE Names:         CVE-2016-4470 
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 6.7
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 HPC Node EUS (v. 6.7) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, noarch, ppc64, s390x, 
x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, 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 Linux kernel's keyring handling code, where in
key_reject_and_link() an uninitialized variable would eventually lead to
arbitrary free address which could allow attacker to use a use-after-free
style attack. (CVE-2016-4470, Important)

This issue was discovered by David Howells (Red Hat Inc.).

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/):

1341716 - CVE-2016-4470 kernel: Uninitialized variable in request_key handling 
causes kernel crash in error handling path

6. Package List:

Red Hat Enterprise Linux HPC Node EUS (v. 6.7):

Source:
kernel-2.6.32-573.35.1.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.35.1.el6.noarch.rpm
kernel-doc-2.6.32-573.35.1.el6.noarch.rpm
kernel-firmware-2.6.32-573.35.1.el6.noarch.rpm

x86_64:
kernel-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debug-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.35.1.el6.x86_64.rpm
kernel-devel-2.6.32-573.35.1.el6.x86_64.rpm
kernel-headers-2.6.32-573.35.1.el6.x86_64.rpm
perf-2.6.32-573.35.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7):

x86_64:
kernel-debug-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.35.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
python-perf-2.6.32-573.35.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.7):

Source:
kernel-2.6.32-573.35.1.el6.src.rpm

i386:
kernel-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.35.1.el6.i686.rpm
kernel-devel-2.6.32-573.35.1.el6.i686.rpm
kernel-headers-2.6.32-573.35.1.el6.i686.rpm
perf-2.6.32-573.35.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.35.1.el6.noarch.rpm
kernel-doc-2.6.32-573.35.1.el6.noarch.rpm
kernel-firmware-2.6.32-573.35.1.el6.noarch.rpm

ppc64:
kernel-2.6.32-573.35.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debug-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.35.1.el6.ppc64.rpm
kernel-devel-2.6.32-573.35.1.el6.ppc64.rpm
kernel-headers-2.6.32-573.35.1.el6.ppc64.rpm
perf-2.6.32-573.35.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm

s390x:
kernel-2.6.32-573.35.1.el6.s390x.rpm
kernel-debug-2.6.32-573.35.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.35.1.el6.s390x.rpm
kernel-devel-2.6.32-573.35.1.el6.s390x.rpm
kernel-headers-2.6.32-573.35.1.el6.s390x.rpm
kernel-kdump-2.6.32-573.35.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-573.35.1.el6.s390x.rpm
perf-2.6.32-573.35.1.el6.s390x.rpm
perf-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.s390x.rpm

x86_64:
kernel-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debug-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.i686.rpm
kernel-debug-devel-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.35.1.el6.x86_64.rpm
kernel-devel-2.6.32-573.35.1.el6.x86_64.rpm
kernel-headers-2.6.32-573.35.1.el6.x86_64.rpm
perf-2.6.32-573.35.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.7):

i386:
kernel-debug-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.35.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm
python-perf-2.6.32-573.35.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.i686.rpm

ppc64:
kernel-debug-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.35.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm
python-perf-2.6.32-573.35.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.35.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
perf-debuginfo-2.6.32-573.35.1.el6.s390x.rpm
python-perf-2.6.32-573.35.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.35.1.el6.s390x.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.35.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.35.1.el6.x86_64.rpm
python-perf-2.6.32-573.35.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.35.1.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-2016-4470
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2016 Red Hat, Inc.
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