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[RHSA-2012:1148-01] Important: kernel security update

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=====================================================================

Red Hat Security Advisory

 

Synopsis: Important: kernel security update

Advisory ID: RHSA-2012:1148-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1148.html

Issue date: 2012-08-07

CVE Names: CVE-2012-2744

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix one security issue are now available for

Red Hat Enterprise Linux 6.1 Extended Update Support.

 

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 Server EUS (v. 6.1) - i386, noarch, 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 issue:

 

* A NULL pointer dereference flaw was found in the nf_ct_frag6_reasm()

function in the Linux kernel's netfilter IPv6 connection tracking

implementation. A remote attacker could use this flaw to send

specially-crafted packets to a target system that is using IPv6 and also

has the nf_conntrack_ipv6 kernel module loaded, causing it to crash.

(CVE-2012-2744, Important)

 

Red Hat would like to thank an anonymous contributor working with the

Beyond Security SecuriTeam Secure Disclosure program for reporting this

issue.

 

Users should upgrade to these updated packages, which contain a backported

patch to resolve this issue. 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/):

 

833402 - CVE-2012-2744 kernel: netfilter: null pointer dereference in nf_ct_frag6_reasm()

 

6. Package List:

 

Red Hat Enterprise Linux Server EUS (v. 6.1):

 

Source:

kernel-2.6.32-131.30.1.el6.src.rpm

 

i386:

kernel-2.6.32-131.30.1.el6.i686.rpm

kernel-debug-2.6.32-131.30.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-131.30.1.el6.i686.rpm

kernel-debug-devel-2.6.32-131.30.1.el6.i686.rpm

kernel-debuginfo-2.6.32-131.30.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-131.30.1.el6.i686.rpm

kernel-devel-2.6.32-131.30.1.el6.i686.rpm

kernel-headers-2.6.32-131.30.1.el6.i686.rpm

perf-2.6.32-131.30.1.el6.i686.rpm

perf-debuginfo-2.6.32-131.30.1.el6.i686.rpm

 

noarch:

kernel-doc-2.6.32-131.30.1.el6.noarch.rpm

kernel-firmware-2.6.32-131.30.1.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-131.30.1.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-131.30.1.el6.ppc64.rpm

kernel-debug-2.6.32-131.30.1.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-131.30.1.el6.ppc64.rpm

kernel-debug-devel-2.6.32-131.30.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-131.30.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-131.30.1.el6.ppc64.rpm

kernel-devel-2.6.32-131.30.1.el6.ppc64.rpm

kernel-headers-2.6.32-131.30.1.el6.ppc64.rpm

perf-2.6.32-131.30.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-131.30.1.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-131.30.1.el6.s390x.rpm

kernel-debug-2.6.32-131.30.1.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-131.30.1.el6.s390x.rpm

kernel-debug-devel-2.6.32-131.30.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-131.30.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-131.30.1.el6.s390x.rpm

kernel-devel-2.6.32-131.30.1.el6.s390x.rpm

kernel-headers-2.6.32-131.30.1.el6.s390x.rpm

kernel-kdump-2.6.32-131.30.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-131.30.1.el6.s390x.rpm

kernel-kdump-devel-2.6.32-131.30.1.el6.s390x.rpm

perf-2.6.32-131.30.1.el6.s390x.rpm

perf-debuginfo-2.6.32-131.30.1.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-131.30.1.el6.x86_64.rpm

kernel-debug-2.6.32-131.30.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-131.30.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-131.30.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-131.30.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-131.30.1.el6.x86_64.rpm

kernel-devel-2.6.32-131.30.1.el6.x86_64.rpm

kernel-headers-2.6.32-131.30.1.el6.x86_64.rpm

perf-2.6.32-131.30.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-131.30.1.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-2012-2744.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 2012 Red Hat, Inc.

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