====================================================================                   Red Hat Security Advisory

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2013:1783-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2013:1783.html
Issue date:        2013-12-05
CVE Names:         CVE-2012-4508 CVE-2013-2851 CVE-2013-4299 
====================================================================
1. Summary:

Updated kernel packages that fix three security issues and several bugs are
now available for Red Hat Enterprise Linux 6.3 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Compute Node EUS (v. 6.3) - noarch, x86_64
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3)	 - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.3) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.3) - i386, ppc64, s390x, x86_64

3. Description:

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

* A race condition was found in the way asynchronous I/O and fallocate()
interacted when using the ext4 file system. A local, unprivileged user
could use this flaw to expose random data from an extent whose data blocks
have not yet been written, and thus contain data from a deleted file.
(CVE-2012-4508, Important)

* An information leak flaw was found in the way the 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)

* 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 Theodore Ts'o for reporting CVE-2012-4508,
Fujitsu for reporting CVE-2013-4299, and Kees Cook for reporting
CVE-2013-2851. Upstream acknowledges Dmitry Monakhov as the original
reporter of CVE-2012-4508.

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.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

869904 - CVE-2012-4508 kernel: ext4: AIO vs fallocate stale data exposure
969515 - CVE-2013-2851 kernel: block: passing disk names as format strings
1004233 - CVE-2013-4299 kernel: dm: dm-snapshot data leak

6. Package List:

Red Hat Enterprise Linux Compute Node EUS (v. 6.3):

Source:
kernel-2.6.32-279.39.1.el6.src.rpm

noarch:
kernel-doc-2.6.32-279.39.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.39.1.el6.noarch.rpm

x86_64:
kernel-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.39.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.39.1.el6.x86_64.rpm
perf-2.6.32-279.39.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm

Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3)	:

Source:
kernel-2.6.32-279.39.1.el6.src.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
python-perf-2.6.32-279.39.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.3):

Source:
kernel-2.6.32-279.39.1.el6.src.rpm

i386:
kernel-2.6.32-279.39.1.el6.i686.rpm
kernel-debug-2.6.32-279.39.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-279.39.1.el6.i686.rpm
kernel-debug-devel-2.6.32-279.39.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.39.1.el6.i686.rpm
kernel-devel-2.6.32-279.39.1.el6.i686.rpm
kernel-headers-2.6.32-279.39.1.el6.i686.rpm
perf-2.6.32-279.39.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm

noarch:
kernel-doc-2.6.32-279.39.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.39.1.el6.noarch.rpm

ppc64:
kernel-2.6.32-279.39.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debug-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-279.39.1.el6.ppc64.rpm
kernel-devel-2.6.32-279.39.1.el6.ppc64.rpm
kernel-headers-2.6.32-279.39.1.el6.ppc64.rpm
perf-2.6.32-279.39.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm

s390x:
kernel-2.6.32-279.39.1.el6.s390x.rpm
kernel-debug-2.6.32-279.39.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-279.39.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-279.39.1.el6.s390x.rpm
kernel-devel-2.6.32-279.39.1.el6.s390x.rpm
kernel-headers-2.6.32-279.39.1.el6.s390x.rpm
kernel-kdump-2.6.32-279.39.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-279.39.1.el6.s390x.rpm
perf-2.6.32-279.39.1.el6.s390x.rpm
perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm

x86_64:
kernel-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.39.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.39.1.el6.x86_64.rpm
perf-2.6.32-279.39.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.3):

Source:
kernel-2.6.32-279.39.1.el6.src.rpm

i386:
kernel-debug-debuginfo-2.6.32-279.39.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.39.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm
python-perf-2.6.32-279.39.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm

ppc64:
kernel-debug-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-279.39.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
python-perf-2.6.32-279.39.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-279.39.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
python-perf-2.6.32-279.39.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
python-perf-2.6.32-279.39.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.39.1.el6.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

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-4508.html
https://www.redhat.com/security/data/cve/CVE-2013-2851.html
https://www.redhat.com/security/data/cve/CVE-2013-4299.html
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.3_Technical_Notes/kernel.html

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2013 Red Hat, Inc.

Red Hat: 2013:1783-01: kernel: Important Advisory

Updated kernel packages that fix three security issues and several bugs are now available for Red Hat Enterprise Linux 6.3 Extended Update Support

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
* A race condition was found in the way asynchronous I/O and fallocate() interacted when using the ext4 file system. A local, unprivileged user could use this flaw to expose random data from an extent whose data blocks have not yet been written, and thus contain data from a deleted file. (CVE-2012-4508, Important)
* An information leak flaw was found in the way the 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)
* 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 Theodore Ts'o for reporting CVE-2012-4508, Fujitsu for reporting CVE-2013-4299, and Kees Cook for reporting CVE-2013-2851. Upstream acknowledges Dmitry Monakhov as the original reporter of CVE-2012-4508.
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.

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/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.

References

https://www.redhat.com/security/data/cve/CVE-2012-4508.html https://www.redhat.com/security/data/cve/CVE-2013-2851.html https://www.redhat.com/security/data/cve/CVE-2013-4299.html https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.3_Technical_Notes/kernel.html

Package List

Red Hat Enterprise Linux Compute Node EUS (v. 6.3):
Source: kernel-2.6.32-279.39.1.el6.src.rpm
noarch: kernel-doc-2.6.32-279.39.1.el6.noarch.rpm kernel-firmware-2.6.32-279.39.1.el6.noarch.rpm
x86_64: kernel-2.6.32-279.39.1.el6.x86_64.rpm kernel-debug-2.6.32-279.39.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm kernel-devel-2.6.32-279.39.1.el6.x86_64.rpm kernel-headers-2.6.32-279.39.1.el6.x86_64.rpm perf-2.6.32-279.39.1.el6.x86_64.rpm perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.3) :
Source: kernel-2.6.32-279.39.1.el6.src.rpm
x86_64: kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm python-perf-2.6.32-279.39.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 6.3):
Source: kernel-2.6.32-279.39.1.el6.src.rpm
i386: kernel-2.6.32-279.39.1.el6.i686.rpm kernel-debug-2.6.32-279.39.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-279.39.1.el6.i686.rpm kernel-debug-devel-2.6.32-279.39.1.el6.i686.rpm kernel-debuginfo-2.6.32-279.39.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-279.39.1.el6.i686.rpm kernel-devel-2.6.32-279.39.1.el6.i686.rpm kernel-headers-2.6.32-279.39.1.el6.i686.rpm perf-2.6.32-279.39.1.el6.i686.rpm perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm
noarch: kernel-doc-2.6.32-279.39.1.el6.noarch.rpm kernel-firmware-2.6.32-279.39.1.el6.noarch.rpm
ppc64: kernel-2.6.32-279.39.1.el6.ppc64.rpm kernel-bootwrapper-2.6.32-279.39.1.el6.ppc64.rpm kernel-debug-2.6.32-279.39.1.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm kernel-debug-devel-2.6.32-279.39.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-279.39.1.el6.ppc64.rpm kernel-devel-2.6.32-279.39.1.el6.ppc64.rpm kernel-headers-2.6.32-279.39.1.el6.ppc64.rpm perf-2.6.32-279.39.1.el6.ppc64.rpm perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
s390x: kernel-2.6.32-279.39.1.el6.s390x.rpm kernel-debug-2.6.32-279.39.1.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-279.39.1.el6.s390x.rpm kernel-debug-devel-2.6.32-279.39.1.el6.s390x.rpm kernel-debuginfo-2.6.32-279.39.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-279.39.1.el6.s390x.rpm kernel-devel-2.6.32-279.39.1.el6.s390x.rpm kernel-headers-2.6.32-279.39.1.el6.s390x.rpm kernel-kdump-2.6.32-279.39.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-279.39.1.el6.s390x.rpm kernel-kdump-devel-2.6.32-279.39.1.el6.s390x.rpm perf-2.6.32-279.39.1.el6.s390x.rpm perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
x86_64: kernel-2.6.32-279.39.1.el6.x86_64.rpm kernel-debug-2.6.32-279.39.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm kernel-devel-2.6.32-279.39.1.el6.x86_64.rpm kernel-headers-2.6.32-279.39.1.el6.x86_64.rpm perf-2.6.32-279.39.1.el6.x86_64.rpm perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 6.3):
Source: kernel-2.6.32-279.39.1.el6.src.rpm
i386: kernel-debug-debuginfo-2.6.32-279.39.1.el6.i686.rpm kernel-debuginfo-2.6.32-279.39.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-279.39.1.el6.i686.rpm perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm python-perf-2.6.32-279.39.1.el6.i686.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.i686.rpm
ppc64: kernel-debug-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm kernel-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-279.39.1.el6.ppc64.rpm perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm python-perf-2.6.32-279.39.1.el6.ppc64.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.ppc64.rpm
s390x: kernel-debug-debuginfo-2.6.32-279.39.1.el6.s390x.rpm kernel-debuginfo-2.6.32-279.39.1.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-279.39.1.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-279.39.1.el6.s390x.rpm perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm python-perf-2.6.32-279.39.1.el6.s390x.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.s390x.rpm
x86_64: kernel-debug-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-279.39.1.el6.x86_64.rpm perf-debuginfo-2.6.32-279.39.1.el6.x86_64.rpm python-perf-2.6.32-279.39.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-279.39.1.el6.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

Severity

Advisory ID: RHSA-2013:1783-01

Product: Red Hat Enterprise Linux

Advisory URL: https://access.redhat.com/errata/RHSA-2013:1783.html

Issued Date: : 2013-12-05

CVE Names: CVE-2012-4508 CVE-2013-2851 CVE-2013-4299

Topic

Updated kernel packages that fix three security issues and several bugs arenow available for Red Hat Enterprise Linux 6.3 Extended Update Support.The Red Hat Security Response Team has rated this update as havingimportant security impact. Common Vulnerability Scoring System (CVSS) basescores, which give detailed severity ratings, are available for eachvulnerability from the CVE links in the References section.