Moderate CentOS kernel Update

Metadata

medium
4.9
kernel-2.6.32-279.22.1.el6.i686.rpm, kernel-2.6.32-279.22.1.el6.src.rpm, kernel-2.6.32-279.22.1.el6.x86_64.rpm, kernel-debug-2.6.32-279.22.1.el6.i686.rpm, kernel-debug-2.6.32-279.22.1.el6.x86_64.rpm, kernel-debug-devel-2.6.32-279.22.1.el6.i686.rpm, kernel-debug-devel-2.6.32-279.22.1.el6.x86_64.rpm, kernel-devel-2.6.32-279.22.1.el6.i686.rpm, kernel-devel-2.6.32-279.22.1.el6.x86_64.rpm, kernel-doc-2.6.32-279.22.1.el6.noarch.rpm, kernel-firmware-2.6.32-279.22.1.el6.noarch.rpm, kernel-headers-2.6.32-279.22.1.el6.i686.rpm, kernel-headers-2.6.32-279.22.1.el6.x86_64.rpm, perf-2.6.32-279.22.1.el6.i686.rpm, perf-2.6.32-279.22.1.el6.x86_64.rpm, python-perf-2.6.32-279.22.1.el6.i686.rpm, python-perf-2.6.32-279.22.1.el6.x86_64.rpm
CVE-2012-4398, CVE-2012-4461, CVE-2012-4530
rhn.redhat.com, lists.centos.org
2013-02-06
2017-07-27 19:04
ALAS-2013-233
ALAS-2013-166
CVE-2012-4398 linux
CVE-2012-4461 linux
CVE-2012-4530 linux
CVE-2012-4398
CVE-2012-4530
CVE-2012-4461
2017-04-01 19:06
2017-01-05 20:10

Description


Updated kernel packages that fix three security issues and several bugs are
now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues:

* It was found that a deadlock could occur in the Out of Memory (OOM)
killer. A process could trigger this deadlock by consuming a large amount
of memory, and then causing request_module() to be called. A local,
unprivileged user could use this flaw to cause a denial of service
(excessive memory consumption). (CVE-2012-4398, Moderate)

* A flaw was found in the way the KVM (Kernel-based Virtual Machine)
subsystem handled guests attempting to run with the X86_CR4_OSXSAVE CPU
feature flag set. On hosts without the XSAVE CPU feature, a local,
unprivileged user could use this flaw to crash the host system. (The
"grep --color xsave /proc/cpuinfo" command can be used to verify if your
system has the XSAVE CPU feature.) (CVE-2012-4461, Moderate)

* A memory disclosure flaw was found in the way the load_script() function
in the binfmt_script binary format handler handled excessive recursions. A
local, unprivileged user could use this flaw to leak kernel stack memory to
user-space by executing specially-crafted scripts. (CVE-2012-4530, Low)

Red Hat would like to thank Tetsuo Handa for reporting CVE-2012-4398, and
Jon Howell for reporting CVE-2012-4461.

This update also fixes several bugs. Documentation for these changes will
be available shortly from the Technical Notes document linked to in the
References section.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues, and fix the bugs noted in the Technical
Notes. The system must be rebooted for this update to take effect.
Please see https://www.redhat.com/footer/terms-of-use.html

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Affected package information

Release Package Patched in
6 kernel kernel-2.6.32-279.22.1.el6.i686.rpm
kernel kernel-2.6.32-279.22.1.el6.src.rpm
kernel kernel-2.6.32-279.22.1.el6.x86_64.rpm
kernel-debug kernel-debug-2.6.32-279.22.1.el6.i686.rpm
kernel-debug kernel-debug-2.6.32-279.22.1.el6.x86_64.rpm
kernel-debug-devel kernel-debug-devel-2.6.32-279.22.1.el6.i686.rpm
kernel-debug-devel kernel-debug-devel-2.6.32-279.22.1.el6.x86_64.rpm
kernel-devel kernel-devel-2.6.32-279.22.1.el6.i686.rpm
kernel-devel kernel-devel-2.6.32-279.22.1.el6.x86_64.rpm
kernel-doc kernel-doc-2.6.32-279.22.1.el6.noarch.rpm
kernel-firmware kernel-firmware-2.6.32-279.22.1.el6.noarch.rpm
kernel-headers kernel-headers-2.6.32-279.22.1.el6.i686.rpm
kernel-headers kernel-headers-2.6.32-279.22.1.el6.x86_64.rpm
perf perf-2.6.32-279.22.1.el6.i686.rpm
perf perf-2.6.32-279.22.1.el6.x86_64.rpm
python-perf python-perf-2.6.32-279.22.1.el6.i686.rpm
python-perf python-perf-2.6.32-279.22.1.el6.x86_64.rpm