[RHSA-2012:0690-01] 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-2012:0690-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0690.html

Issue date: 2012-05-29

CVE Names: CVE-2012-2136

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

 

1. Summary:

 

Updated kernel packages that fix one security issue and various bugs 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 issue:

 

* It was found that the data_len parameter of the sock_alloc_send_pskb()

function in the Linux kernel's networking implementation was not validated

before use. A local user with access to a TUN/TAP virtual interface could

use this flaw to crash the system or, potentially, escalate their

privileges. Note that unprivileged users cannot access TUN/TAP devices

until the root user grants them access. (CVE-2012-2136, Important)

 

This update also fixes various 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 this issue, and fix the bugs noted in the Technical

Notes. 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/):

 

816289 - CVE-2012-2136 kernel: net: insufficient data_len validation in sock_alloc_send_pskb()

 

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-2.6.18-308.8.1.el5.src.rpm

 

i386:

kernel-2.6.18-308.8.1.el5.i686.rpm

kernel-PAE-2.6.18-308.8.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-308.8.1.el5.i686.rpm

kernel-debug-2.6.18-308.8.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.i686.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.i686.rpm

kernel-devel-2.6.18-308.8.1.el5.i686.rpm

kernel-headers-2.6.18-308.8.1.el5.i386.rpm

kernel-xen-2.6.18-308.8.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-xen-devel-2.6.18-308.8.1.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-308.8.1.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debug-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.x86_64.rpm

kernel-devel-2.6.18-308.8.1.el5.x86_64.rpm

kernel-headers-2.6.18-308.8.1.el5.x86_64.rpm

kernel-xen-2.6.18-308.8.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-308.8.1.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-2.6.18-308.8.1.el5.src.rpm

 

i386:

kernel-2.6.18-308.8.1.el5.i686.rpm

kernel-PAE-2.6.18-308.8.1.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-PAE-devel-2.6.18-308.8.1.el5.i686.rpm

kernel-debug-2.6.18-308.8.1.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.i686.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.i686.rpm

kernel-devel-2.6.18-308.8.1.el5.i686.rpm

kernel-headers-2.6.18-308.8.1.el5.i386.rpm

kernel-xen-2.6.18-308.8.1.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-308.8.1.el5.i686.rpm

kernel-xen-devel-2.6.18-308.8.1.el5.i686.rpm

 

ia64:

kernel-2.6.18-308.8.1.el5.ia64.rpm

kernel-debug-2.6.18-308.8.1.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.ia64.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.ia64.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.ia64.rpm

kernel-devel-2.6.18-308.8.1.el5.ia64.rpm

kernel-headers-2.6.18-308.8.1.el5.ia64.rpm

kernel-xen-2.6.18-308.8.1.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-308.8.1.el5.ia64.rpm

kernel-xen-devel-2.6.18-308.8.1.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-308.8.1.el5.noarch.rpm

 

ppc:

kernel-2.6.18-308.8.1.el5.ppc64.rpm

kernel-debug-2.6.18-308.8.1.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.ppc64.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.ppc64.rpm

kernel-devel-2.6.18-308.8.1.el5.ppc64.rpm

kernel-headers-2.6.18-308.8.1.el5.ppc.rpm

kernel-headers-2.6.18-308.8.1.el5.ppc64.rpm

kernel-kdump-2.6.18-308.8.1.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-308.8.1.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-308.8.1.el5.s390x.rpm

kernel-debug-2.6.18-308.8.1.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.s390x.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.s390x.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.s390x.rpm

kernel-devel-2.6.18-308.8.1.el5.s390x.rpm

kernel-headers-2.6.18-308.8.1.el5.s390x.rpm

kernel-kdump-2.6.18-308.8.1.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-308.8.1.el5.s390x.rpm

kernel-kdump-devel-2.6.18-308.8.1.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debug-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debug-devel-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-308.8.1.el5.x86_64.rpm

kernel-devel-2.6.18-308.8.1.el5.x86_64.rpm

kernel-headers-2.6.18-308.8.1.el5.x86_64.rpm

kernel-xen-2.6.18-308.8.1.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm

kernel-xen-devel-2.6.18-308.8.1.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-2012-2136.html

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

https://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.8_Technical_Notes/kernel.html#RHSA-2012-0690

 

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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