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Red Hat Enterprise Linux 6.3 RHSA-2013:0832-01 Important Memory Access

red hat
Calendar Grey May 17, 2013
Dist Redhat Esm H88
Kernel enhancement now released for CentOS, vital for addressing vulnerabilities. Upgrade recommended for safeguarding.
Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.3 Extended Update Support

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
This update fixes the following security issue:
* It was found that the Red Hat Enterprise Linux 6.1 kernel update (RHSA-2011:0542) introduced an integer conversion issue in the Linux kernel's Performance Events implementation. This led to a user-supplied index into the perf_swevent_enabled array not being validated properly, resulting in out-of-bounds kernel memory access. A local, unprivileged user could use this flaw to escalate their privileges. (CVE-2013-2094, Important)
A public exploit that affects Red Hat Enterprise Linux 6 is available.
Refer to Red Hat Knowledge Solution 373743, linked to in the References, for further information and mitigation instructions for users who are unable to immediately apply this update.
Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

Topics%20covered

Topics Covered

security advisory kernel update memory access important fix Red Hat enterprise

References

https://access.redhat.com/security/cve/CVE-2013-2094 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/site/solutions/373743 https://access.redhat.com/errata/RHSA-2011:0542.html

Package List

Red Hat Enterprise Linux Server EUS (v. 6.3):
Source: kernel-2.6.32-279.25.2.el6.src.rpm
i386: kernel-2.6.32-279.25.2.el6.i686.rpm kernel-debug-2.6.32-279.25.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-279.25.2.el6.i686.rpm kernel-debug-devel-2.6.32-279.25.2.el6.i686.rpm kernel-debuginfo-2.6.32-279.25.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-279.25.2.el6.i686.rpm kernel-devel-2.6.32-279.25.2.el6.i686.rpm kernel-headers-2.6.32-279.25.2.el6.i686.rpm perf-2.6.32-279.25.2.el6.i686.rpm perf-debuginfo-2.6.32-279.25.2.el6.i686.rpm python-perf-debuginfo-2.6.32-279.25.2.el6.i686.rpm
noarch: kernel-doc-2.6.32-279.25.2.el6.noarch.rpm kernel-firmware-2.6.32-279.25.2.el6.noarch.rpm
ppc64: kernel-2.6.32-279.25.2.el6.ppc64.rpm kernel-bootwrapper-2.6.32-279.25.2.el6.ppc64.rpm kernel-debug-2.6.32-279.25.2.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-279.25.2.el6.ppc64.rpm kernel-debug-devel-2.6.32-279.25.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-279.25.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-279.25.2.el6.ppc64.rpm kernel-devel-2.6.32-279.25.2.el6.ppc64.rpm kernel-headers-2.6.32-279.25.2.el6.ppc64.rpm perf-2.6.32-279.25.2.el6.ppc64.rpm perf-debuginfo-2.6.32-279.25.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-279.25.2.el6.ppc64.rpm
s390x:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2013:0832-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:0832.html
Issue date: 2013-05-17

Topic

Updated kernel packages that fix one security issue are now available forRed Hat Enterprise Linux 6.3 Extended Update Support.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

Topics%20covered

Topics Covered

security advisory kernel update memory access important fix Red Hat enterprise

Relevant Releases Architectures

Red Hat Enterprise Linux Server EUS (v. 6.3) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 6.3) - i386, ppc64, s390x, x86_64

Bugs Fixed

962792 - CVE-2013-2094 kernel: perf_swevent_enabled array out-of-bound access

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