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Red Hat Security Advisory 2012-1366-01

Red Hat Security Advisory 2012-1366-01
Posted Oct 17, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1366-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issue: A flaw was found in the way socket buffers requiring TSO were handled by the sfc driver. If the skb did not fit within the minimum-size of the transmission queue, the network card could repeatedly reset itself. A remote attacker could use this flaw to cause a denial of service.

tags | advisory, remote, denial of service, kernel
systems | linux, redhat
advisories | CVE-2012-3412
SHA-256 | 4bdfbba056bd4cff7b0f9bca40a4eb14716b0f07ee6d5f9e40715fc00d6227dc
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Red Hat Security Advisory 2012-1366-01

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2012:1366-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1366.html
Issue date:        2012-10-16
CVE Names:         CVE-2012-3412 
=====================================================================

1. Summary:

Updated kernel packages that fix one security issue and several bugs are
now available for Red Hat Enterprise Linux 6.

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 Desktop (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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 flaw was found in the way socket buffers (skb) requiring TSO (TCP
segment offloading) were handled by the sfc driver. If the skb did not fit
within the minimum-size of the transmission queue, the network card could
repeatedly reset itself. A remote attacker could use this flaw to cause a
denial of service. (CVE-2012-3412, Important)

Red Hat would like to thank Ben Hutchings of Solarflare (tm) for reporting
this issue.

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 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/):

844714 - CVE-2012-3412 kernel: sfc: potential remote denial of service through TCP MSS option

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

i386:
kernel-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.11.1.el6.i686.rpm
kernel-devel-2.6.32-279.11.1.el6.i686.rpm
kernel-headers-2.6.32-279.11.1.el6.i686.rpm
perf-2.6.32-279.11.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm

noarch:
kernel-doc-2.6.32-279.11.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.11.1.el6.noarch.rpm

x86_64:
kernel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.11.1.el6.x86_64.rpm
perf-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

i386:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.11.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm
python-perf-2.6.32-279.11.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

noarch:
kernel-doc-2.6.32-279.11.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.11.1.el6.noarch.rpm

x86_64:
kernel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.11.1.el6.x86_64.rpm
perf-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

i386:
kernel-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.11.1.el6.i686.rpm
kernel-devel-2.6.32-279.11.1.el6.i686.rpm
kernel-headers-2.6.32-279.11.1.el6.i686.rpm
perf-2.6.32-279.11.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm

noarch:
kernel-doc-2.6.32-279.11.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.11.1.el6.noarch.rpm

ppc64:
kernel-2.6.32-279.11.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debug-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-279.11.1.el6.ppc64.rpm
kernel-devel-2.6.32-279.11.1.el6.ppc64.rpm
kernel-headers-2.6.32-279.11.1.el6.ppc64.rpm
perf-2.6.32-279.11.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm

s390x:
kernel-2.6.32-279.11.1.el6.s390x.rpm
kernel-debug-2.6.32-279.11.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-279.11.1.el6.s390x.rpm
kernel-devel-2.6.32-279.11.1.el6.s390x.rpm
kernel-headers-2.6.32-279.11.1.el6.s390x.rpm
kernel-kdump-2.6.32-279.11.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-279.11.1.el6.s390x.rpm
perf-2.6.32-279.11.1.el6.s390x.rpm
perf-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.s390x.rpm

x86_64:
kernel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.11.1.el6.x86_64.rpm
perf-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

i386:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.11.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm
python-perf-2.6.32-279.11.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm

ppc64:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-279.11.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm
python-perf-2.6.32-279.11.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-279.11.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
perf-debuginfo-2.6.32-279.11.1.el6.s390x.rpm
python-perf-2.6.32-279.11.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.s390x.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

i386:
kernel-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.11.1.el6.i686.rpm
kernel-devel-2.6.32-279.11.1.el6.i686.rpm
kernel-headers-2.6.32-279.11.1.el6.i686.rpm
perf-2.6.32-279.11.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm

noarch:
kernel-doc-2.6.32-279.11.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.11.1.el6.noarch.rpm

x86_64:
kernel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.11.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.11.1.el6.x86_64.rpm
perf-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/kernel-2.6.32-279.11.1.el6.src.rpm

i386:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.11.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm
python-perf-2.6.32-279.11.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.11.1.el6.i686.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.11.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-2.6.32-279.11.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.11.1.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-2012-3412.html
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.3_Technical_Notes/kernel.html#RHSA-2012-1366

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2012 Red Hat, Inc.
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