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Red Hat 6: RHSA-2012-1366-01 Important Denial of Service Fix

red hat
Calendar Grey October 16, 2012
Scroller Redhat
The latest security patch from Red Hat tackles vulnerabilities that could lead to service interruptions and provides crucial updates to enhance user experience.
Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 6

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.

Summary

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.

Topics%20covered

Topics Covered

security advisory denial of service Red Hat important kernel

References

https://access.redhat.com/security/cve/CVE-2012-3412 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
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:
i386:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2012:1366-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:1366.html
Issue date: 2012-10-16

Topic

Updated kernel packages that fix one security issue and several bugs arenow available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.

Topics%20covered

Topics Covered

security advisory denial of service Red Hat important kernel

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

Bugs Fixed

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

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