Issued:: 2014-03-11
Updated:: 2014-03-11

RHSA-2014:0284 - Important: kernel security and bug fix update

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory Important

Topic

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6.4 Extended Update Support.

The Red Hat Security Response Team has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

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 IPv6 implementation handled certain UDP packets when the UDP Fragmentation Offload (UFO) feature was enabled. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2013-4387, Important)
A flaw was found in the way the Linux kernel's TCP/IP protocol suite implementation handled sending of certain UDP packets over sockets that used the UDP_CORK option when the UDP Fragmentation Offload (UFO) feature was enabled on the output device. A local, unprivileged user could use this flaw to cause a denial of service or, potentially, escalate their privileges on the system. (CVE-2013-4470, Important)
A divide-by-zero flaw was found in the apic_get_tmcct() function in KVM's Local Advanced Programmable Interrupt Controller (LAPIC) implementation. A privileged guest user could use this flaw to crash the host. (CVE-2013-6367, Important)
A memory corruption flaw was discovered in the way KVM handled virtual APIC accesses that crossed a page boundary. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2013-6368, Important)
A buffer overflow flaw was found in the way the qeth_snmp_command() function in the Linux kernel's QETH network device driver implementation handled SNMP IOCTL requests with an out-of-bounds length. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2013-6381, Important)
It was found that the fix for CVE-2012-2375 released via RHSA-2012:1580 accidentally removed a check for small-sized result buffers. A local, unprivileged user with access to an NFSv4 mount with ACL support could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2013-4591, Moderate)
A format string flaw was found in the Linux kernel's block layer. A privileged, local user could potentially use this flaw to escalate their privileges to kernel level (ring0). (CVE-2013-2851, Low)

Red Hat would like to thank Hannes Frederic Sowa for reporting CVE-2013-4470, Andrew Honig of Google for reporting CVE-2013-6367 and CVE-2013-6368, and Kees Cook for reporting CVE-2013-2851.

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.

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.

Affected Products

Product	Version	Arch
Red Hat Storage for Public Cloud (via RHUI)	2.1	x86_64
Red Hat Gluster Storage Server for On-premise	2.1	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support	6.4	x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support	6.4	i386
Red Hat Enterprise Linux for Power, big endian - Extended Update Support	6.4	ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support	6.4	s390x
Red Hat Enterprise Linux Server - Extended Update Support from RHUI	6.4	x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI	6.4	i386
Red Hat Enterprise Linux Server - AUS	6.4	x86_64
Red Hat Enterprise Linux EUS Compute Node	6.4	x86_64

Updated Packages

kernel-debug-debuginfo-2.6.32-358.37.1.el6.i686.rpm
python-perf-2.6.32-358.37.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-358.37.1.el6.s390x.rpm
kernel-firmware-2.6.32-358.37.1.el6.noarch.rpm
kernel-kdump-2.6.32-358.37.1.el6.s390x.rpm
kernel-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-358.37.1.el6.ppc64.rpm
kernel-headers-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-358.37.1.el6.ppc64.rpm
kernel-2.6.32-358.37.1.el6.s390x.rpm
python-perf-2.6.32-358.37.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-358.37.1.el6.x86_64.rpm
perf-2.6.32-358.37.1.el6.s390x.rpm
python-perf-2.6.32-358.37.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-358.37.1.el6.x86_64.rpm
kernel-devel-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-358.37.1.el6.s390x.rpm
kernel-debug-2.6.32-358.37.1.el6.s390x.rpm
kernel-debug-2.6.32-358.37.1.el6.i686.rpm
perf-2.6.32-358.37.1.el6.x86_64.rpm
kernel-devel-2.6.32-358.37.1.el6.i686.rpm
kernel-headers-2.6.32-358.37.1.el6.x86_64.rpm
kernel-2.6.32-358.37.1.el6.i686.rpm
kernel-2.6.32-358.37.1.el6.src.rpm
kernel-kdump-debuginfo-2.6.32-358.37.1.el6.s390x.rpm
perf-debuginfo-2.6.32-358.37.1.el6.i686.rpm
perf-debuginfo-2.6.32-358.37.1.el6.s390x.rpm
perf-debuginfo-2.6.32-358.37.1.el6.x86_64.rpm
kernel-bootwrapper-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debuginfo-common-s390x-2.6.32-358.37.1.el6.s390x.rpm
kernel-devel-2.6.32-358.37.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-358.37.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-358.37.1.el6.x86_64.rpm
python-perf-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debuginfo-common-i686-2.6.32-358.37.1.el6.i686.rpm
kernel-devel-2.6.32-358.37.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-358.37.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-358.37.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-358.37.1.el6.i686.rpm
perf-2.6.32-358.37.1.el6.i686.rpm
kernel-debuginfo-common-ppc64-2.6.32-358.37.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-358.37.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-358.37.1.el6.s390x.rpm
kernel-headers-2.6.32-358.37.1.el6.s390x.rpm
kernel-doc-2.6.32-358.37.1.el6.noarch.rpm
kernel-2.6.32-358.37.1.el6.x86_64.rpm
kernel-kdump-devel-2.6.32-358.37.1.el6.s390x.rpm
kernel-debug-2.6.32-358.37.1.el6.x86_64.rpm
kernel-debug-2.6.32-358.37.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-358.37.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-358.37.1.el6.i686.rpm
kernel-headers-2.6.32-358.37.1.el6.i686.rpm
kernel-debug-devel-2.6.32-358.37.1.el6.x86_64.rpm
perf-2.6.32-358.37.1.el6.ppc64.rpm

Fixes

CVEs

References

Additional information

The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.