[RHSA-2013:0621-01] Important: kernel security update

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Red Hat Security Advisory

 

Synopsis: Important: kernel security update

Advisory ID: RHSA-2013:0621-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0621.html

Issue date: 2013-03-11

CVE Names: CVE-2013-0268 CVE-2013-0871

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1. Summary:

 

Updated kernel packages that fix two security issues are now available

for Red Hat Enterprise Linux 5.

 

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

important security impact. A Common Vulnerability Scoring System (CVSS)

base score, which gives a detailed severity rating, is available from the

CVE link in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, 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 flaw was found in the way file permission checks for the

"/dev/cpu/[x]/msr" files were performed in restricted root environments

(for example, when using a capability-based security model). A local user

with the ability to write to these files could use this flaw to escalate

their privileges to kernel level, for example, by writing to the

SYSENTER_EIP_MSR register. (CVE-2013-0268, Important)

 

* 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)

 

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/):

 

908693 - CVE-2013-0268 kernel: x86/msr: /dev/cpu/*/msr local privilege escalation

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

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 5 client):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/kernel-2.6.18-348.3.1.el5.src.rpm

 

i386:

kernel-2.6.18-348.3.1.el5.i686.rpm

kernel-PAE-2.6.18-348.3.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-348.3.1.el5.i686.rpm

kernel-debug-2.6.18-348.3.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.i686.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.i686.rpm

kernel-devel-2.6.18-348.3.1.el5.i686.rpm

kernel-headers-2.6.18-348.3.1.el5.i386.rpm

kernel-xen-2.6.18-348.3.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-xen-devel-2.6.18-348.3.1.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-348.3.1.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debug-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.x86_64.rpm

kernel-devel-2.6.18-348.3.1.el5.x86_64.rpm

kernel-headers-2.6.18-348.3.1.el5.x86_64.rpm

kernel-xen-2.6.18-348.3.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-348.3.1.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-348.3.1.el5.src.rpm

 

i386:

kernel-2.6.18-348.3.1.el5.i686.rpm

kernel-PAE-2.6.18-348.3.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-348.3.1.el5.i686.rpm

kernel-debug-2.6.18-348.3.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.i686.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.i686.rpm

kernel-devel-2.6.18-348.3.1.el5.i686.rpm

kernel-headers-2.6.18-348.3.1.el5.i386.rpm

kernel-xen-2.6.18-348.3.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-348.3.1.el5.i686.rpm

kernel-xen-devel-2.6.18-348.3.1.el5.i686.rpm

 

ia64:

kernel-2.6.18-348.3.1.el5.ia64.rpm

kernel-debug-2.6.18-348.3.1.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.ia64.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.ia64.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.ia64.rpm

kernel-devel-2.6.18-348.3.1.el5.ia64.rpm

kernel-headers-2.6.18-348.3.1.el5.ia64.rpm

kernel-xen-2.6.18-348.3.1.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-348.3.1.el5.ia64.rpm

kernel-xen-devel-2.6.18-348.3.1.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-348.3.1.el5.noarch.rpm

 

ppc:

kernel-2.6.18-348.3.1.el5.ppc64.rpm

kernel-debug-2.6.18-348.3.1.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.ppc64.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.ppc64.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.ppc64.rpm

kernel-devel-2.6.18-348.3.1.el5.ppc64.rpm

kernel-headers-2.6.18-348.3.1.el5.ppc.rpm

kernel-headers-2.6.18-348.3.1.el5.ppc64.rpm

kernel-kdump-2.6.18-348.3.1.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-348.3.1.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-348.3.1.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-348.3.1.el5.s390x.rpm

kernel-debug-2.6.18-348.3.1.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.s390x.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.s390x.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.s390x.rpm

kernel-devel-2.6.18-348.3.1.el5.s390x.rpm

kernel-headers-2.6.18-348.3.1.el5.s390x.rpm

kernel-kdump-2.6.18-348.3.1.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-348.3.1.el5.s390x.rpm

kernel-kdump-devel-2.6.18-348.3.1.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debug-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-348.3.1.el5.x86_64.rpm

kernel-devel-2.6.18-348.3.1.el5.x86_64.rpm

kernel-headers-2.6.18-348.3.1.el5.x86_64.rpm

kernel-xen-2.6.18-348.3.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-348.3.1.el5.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-2013-0268.html

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

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

 

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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