Issued:
2012-08-07
Updated:
2012-08-07

RHSA-2012:1148 - Important: kernel security update

Synopsis

Important: kernel security update

Type/Severity

Security Advisory Important

Topic

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.1 Extended Update Support.

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.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue:

  • A NULL pointer dereference flaw was found in the nf_ct_frag6_reasm() function in the Linux kernel's netfilter IPv6 connection tracking implementation. A remote attacker could use this flaw to send specially-crafted packets to a target system that is using IPv6 and also has the nf_conntrack_ipv6 kernel module loaded, causing it to crash. (CVE-2012-2744, Important)

Red Hat would like to thank an anonymous contributor working with the Beyond Security SecuriTeam Secure Disclosure program for reporting this issue.

Users should upgrade to these updated packages, which contain a backported patch to resolve this issue. 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/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.

Affected Products

ProductVersionArch
Red Hat Virtual Storage Appliance (from RHUI)6.1x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.1x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.1i386
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.1ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.1s390x
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.1x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.1i386

Updated Packages

  • kernel-debug-devel-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debug-devel-2.6.32-131.30.1.el6.x86_64.rpm
  • perf-debuginfo-2.6.32-131.30.1.el6.i686.rpm
  • kernel-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-doc-2.6.32-131.30.1.el6.noarch.rpm
  • kernel-debug-devel-2.6.32-131.30.1.el6.s390x.rpm
  • perf-debuginfo-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debug-debuginfo-2.6.32-131.30.1.el6.ppc64.rpm
  • perf-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debug-2.6.32-131.30.1.el6.s390x.rpm
  • perf-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-debuginfo-2.6.32-131.30.1.el6.i686.rpm
  • kernel-kdump-devel-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-debuginfo-common-i686-2.6.32-131.30.1.el6.i686.rpm
  • kernel-debuginfo-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-devel-2.6.32-131.30.1.el6.i686.rpm
  • perf-2.6.32-131.30.1.el6.i686.rpm
  • kernel-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debug-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-debuginfo-common-s390x-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-debuginfo-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-kdump-debuginfo-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-debug-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-firmware-2.6.32-131.30.1.el6.noarch.rpm
  • kernel-debuginfo-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debug-debuginfo-2.6.32-131.30.1.el6.x86_64.rpm
  • perf-debuginfo-2.6.32-131.30.1.el6.s390x.rpm
  • perf-debuginfo-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-headers-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-headers-2.6.32-131.30.1.el6.i686.rpm
  • kernel-devel-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-debug-2.6.32-131.30.1.el6.i686.rpm
  • kernel-debug-debuginfo-2.6.32-131.30.1.el6.s390x.rpm
  • perf-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-debuginfo-common-ppc64-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-bootwrapper-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debug-debuginfo-2.6.32-131.30.1.el6.i686.rpm
  • kernel-headers-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-devel-2.6.32-131.30.1.el6.ppc64.rpm
  • kernel-debuginfo-common-x86_64-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-headers-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-devel-2.6.32-131.30.1.el6.s390x.rpm
  • kernel-2.6.32-131.30.1.el6.x86_64.rpm
  • kernel-2.6.32-131.30.1.el6.i686.rpm
  • kernel-debug-devel-2.6.32-131.30.1.el6.i686.rpm
  • kernel-2.6.32-131.30.1.el6.src.rpm
  • kernel-kdump-2.6.32-131.30.1.el6.s390x.rpm

Fixes

CVEs

References

Additional information