[RHSA-2013:0741-01] Important: kernel security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2013:0741-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0741.html

Issue date: 2013-04-16

CVE Names: CVE-2012-2133 CVE-2013-0871

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1. Summary:

 

Updated kernel packages that fix two security issues and several bugs are

now available for Red Hat Enterprise Linux 6.2 Extended Update Support.

 

The Red Hat Security Response Team has rated this update as having

important 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.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Server EUS (v. 6.2) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 6.2) - i386, ppc64, s390x, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

This update fixes the following security issues:

 

* A race condition was found in the way the Linux kernel's ptrace

implementation handled PTRACE_SETREGS requests when the debuggee was woken

due to a SIGKILL signal instead of being stopped. A local, unprivileged

user could use this flaw to escalate their privileges. (CVE-2013-0871,

Important)

 

* A use-after-free flaw was found in the Linux kernel's memory management

subsystem in the way quota handling for huge pages was performed. A local,

unprivileged user could use this flaw to cause a denial of service or,

potentially, escalate their privileges. (CVE-2012-2133, Moderate)

 

Red Hat would like to thank Shachar Raindel for reporting CVE-2012-2133.

 

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. The system must be rebooted for this

update to take effect.

 

4. 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.

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

817430 - CVE-2012-2133 kernel: use after free bug in "quota" handling

911937 - CVE-2013-0871 kernel: race condition with PTRACE_SETREGS

 

6. Package List:

 

Red Hat Enterprise Linux Server EUS (v. 6.2):

 

Source:

kernel-2.6.32-220.34.1.el6.src.rpm

 

i386:

kernel-2.6.32-220.34.1.el6.i686.rpm

kernel-debug-2.6.32-220.34.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-220.34.1.el6.i686.rpm

kernel-debug-devel-2.6.32-220.34.1.el6.i686.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-220.34.1.el6.i686.rpm

kernel-devel-2.6.32-220.34.1.el6.i686.rpm

kernel-headers-2.6.32-220.34.1.el6.i686.rpm

perf-2.6.32-220.34.1.el6.i686.rpm

perf-debuginfo-2.6.32-220.34.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.i686.rpm

 

noarch:

kernel-doc-2.6.32-220.34.1.el6.noarch.rpm

kernel-firmware-2.6.32-220.34.1.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-220.34.1.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debug-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debug-devel-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-220.34.1.el6.ppc64.rpm

kernel-devel-2.6.32-220.34.1.el6.ppc64.rpm

kernel-headers-2.6.32-220.34.1.el6.ppc64.rpm

perf-2.6.32-220.34.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-220.34.1.el6.s390x.rpm

kernel-debug-2.6.32-220.34.1.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

kernel-debug-devel-2.6.32-220.34.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-220.34.1.el6.s390x.rpm

kernel-devel-2.6.32-220.34.1.el6.s390x.rpm

kernel-headers-2.6.32-220.34.1.el6.s390x.rpm

kernel-kdump-2.6.32-220.34.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

kernel-kdump-devel-2.6.32-220.34.1.el6.s390x.rpm

perf-2.6.32-220.34.1.el6.s390x.rpm

perf-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debug-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-220.34.1.el6.x86_64.rpm

kernel-devel-2.6.32-220.34.1.el6.x86_64.rpm

kernel-headers-2.6.32-220.34.1.el6.x86_64.rpm

perf-2.6.32-220.34.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional EUS (v. 6.2):

 

Source:

kernel-2.6.32-220.34.1.el6.src.rpm

 

i386:

kernel-debug-debuginfo-2.6.32-220.34.1.el6.i686.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-220.34.1.el6.i686.rpm

perf-debuginfo-2.6.32-220.34.1.el6.i686.rpm

python-perf-2.6.32-220.34.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.i686.rpm

 

ppc64:

kernel-debug-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-220.34.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

python-perf-2.6.32-220.34.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-220.34.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

perf-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

python-perf-2.6.32-220.34.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-220.34.1.el6.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-220.34.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-220.34.1.el6.x86_64.rpm

python-perf-2.6.32-220.34.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-220.34.1.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/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-2133.html

https://www.redhat.com/security/data/cve/CVE-2013-0871.html

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.2_Technical_Notes/kernel.html

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2013 Red Hat, Inc.

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