Red Hat: 2012:0690-01: kernel: Important Advisory
Summary
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issue:
* It was found that the data_len parameter of the sock_alloc_send_pskb()
function in the Linux kernel's networking implementation was not validated
before use. A local user with access to a TUN/TAP virtual interface could
use this flaw to crash the system or, potentially, escalate their
privileges. Note that unprivileged users cannot access TUN/TAP devices
until the root user grants them access. (CVE-2012-2136, Important)
This update also fixes various 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.
Summary
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.
References
https://www.redhat.com/security/data/cve/CVE-2012-2136.html https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/search/
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
kernel-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.i686.rpm
kernel-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-headers-2.6.18-308.8.1.el5.i386.rpm
kernel-xen-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.i686.rpm
noarch:
kernel-doc-2.6.18-308.8.1.el5.noarch.rpm
x86_64:
kernel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.x86_64.rpm
kernel-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-headers-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
kernel-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-PAE-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.i686.rpm
kernel-devel-2.6.18-308.8.1.el5.i686.rpm
kernel-headers-2.6.18-308.8.1.el5.i386.rpm
kernel-xen-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.i686.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.i686.rpm
ia64:
kernel-2.6.18-308.8.1.el5.ia64.rpm
kernel-debug-2.6.18-308.8.1.el5.ia64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.ia64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.ia64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.ia64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.ia64.rpm
kernel-devel-2.6.18-308.8.1.el5.ia64.rpm
kernel-headers-2.6.18-308.8.1.el5.ia64.rpm
kernel-xen-2.6.18-308.8.1.el5.ia64.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.ia64.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.ia64.rpm
noarch:
kernel-doc-2.6.18-308.8.1.el5.noarch.rpm
ppc:
kernel-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debug-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.ppc64.rpm
kernel-devel-2.6.18-308.8.1.el5.ppc64.rpm
kernel-headers-2.6.18-308.8.1.el5.ppc.rpm
kernel-headers-2.6.18-308.8.1.el5.ppc64.rpm
kernel-kdump-2.6.18-308.8.1.el5.ppc64.rpm
kernel-kdump-debuginfo-2.6.18-308.8.1.el5.ppc64.rpm
kernel-kdump-devel-2.6.18-308.8.1.el5.ppc64.rpm
s390x:
kernel-2.6.18-308.8.1.el5.s390x.rpm
kernel-debug-2.6.18-308.8.1.el5.s390x.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.s390x.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.s390x.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.s390x.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.s390x.rpm
kernel-devel-2.6.18-308.8.1.el5.s390x.rpm
kernel-headers-2.6.18-308.8.1.el5.s390x.rpm
kernel-kdump-2.6.18-308.8.1.el5.s390x.rpm
kernel-kdump-debuginfo-2.6.18-308.8.1.el5.s390x.rpm
kernel-kdump-devel-2.6.18-308.8.1.el5.s390x.rpm
x86_64:
kernel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debug-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-debuginfo-common-2.6.18-308.8.1.el5.x86_64.rpm
kernel-devel-2.6.18-308.8.1.el5.x86_64.rpm
kernel-headers-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-debuginfo-2.6.18-308.8.1.el5.x86_64.rpm
kernel-xen-devel-2.6.18-308.8.1.el5.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
Topic
Updated kernel packages that fix one security issue and various bugs arenow available for Red Hat Enterprise Linux 5.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.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64
Bugs Fixed
816289 - CVE-2012-2136 kernel: net: insufficient data_len validation in sock_alloc_send_pskb()