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Red Hat Enterprise Linux 6 RHSA-2013:1436-01 Moderate Kernel DoS and Leak

red hat
Calendar Grey October 16, 2013
Dist Redhat Esm H88
Recent kernel enhancements for Red Hat rectify vulnerabilities and glitches. Update recommended to maintain system integrity.
Updated kernel packages that fix two security issues 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/site/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.
* A flaw was found in the way the Linux kernel's TCP/IP protocol suite implementation handled IPv6 sockets that used the UDP_CORK option. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2013-4162, Moderate)
* An information leak flaw was found in the way Linux kernel's device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate)
Red Hat would like to thank Hannes Frederic Sowa for reporting CVE-2013-4162; and Fujitsu for reporting CVE-2013-4299.
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.
All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Topics%20covered

Topics Covered

security advisory moderate information leak Red Hat Enterprise Linux kernel Denial of Service

References

https://access.redhat.com/security/cve/CVE-2013-4162 https://access.redhat.com/security/cve/CVE-2013-4299 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.4_Technical_Notes/kernel.html

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: kernel-2.6.32-358.23.2.el6.i686.rpm kernel-debug-2.6.32-358.23.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-358.23.2.el6.i686.rpm kernel-debug-devel-2.6.32-358.23.2.el6.i686.rpm kernel-debuginfo-2.6.32-358.23.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-358.23.2.el6.i686.rpm kernel-devel-2.6.32-358.23.2.el6.i686.rpm kernel-headers-2.6.32-358.23.2.el6.i686.rpm perf-2.6.32-358.23.2.el6.i686.rpm perf-debuginfo-2.6.32-358.23.2.el6.i686.rpm python-perf-debuginfo-2.6.32-358.23.2.el6.i686.rpm
noarch: kernel-doc-2.6.32-358.23.2.el6.noarch.rpm kernel-firmware-2.6.32-358.23.2.el6.noarch.rpm
x86_64: kernel-2.6.32-358.23.2.el6.x86_64.rpm kernel-debug-2.6.32-358.23.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-358.23.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-358.23.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.23.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.23.2.el6.x86_64.rpm kernel-devel-2.6.32-358.23.2.el6.x86_64.rpm kernel-headers-2.6.32-358.23.2.el6.x86_64.rpm perf-2.6.32-358.23.2.el6.x86_64.rpm perf-debuginfo-2.6.32-358.23.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.23.2.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:

Read the Full Advisory


Advisory ID: RHSA-2013:1436-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1436.html
Issue date: 2013-10-16

Topic

Updated kernel packages that fix two security issues and several bugs arenow available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate information leak Red Hat Enterprise Linux kernel Denial of Service

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

987627 - CVE-2013-4162 Kernel: net: panic while pushing pending data out of a IPv6 socket with UDP_CORK enabled

1004233 - CVE-2013-4299 kernel: dm: dm-snapshot data leak

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