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ESB-2014.2454 - [RedHat] kernel: Root compromise - Existing account

Date: 19 December 2014
References: ESB-2014.2412.2  ESB-2014.2443  ESB-2014.2496  ESB-2015.0019  ESB-2015.0367  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.2454
                     Important: kernel security update
                             19 December 2014

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
                   Red Hat Enterprise Linux WS/Desktop 7
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-9322  

Reference:         ESB-2014.2443
                   ESB-2014.2412.2

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2014-2010.html

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

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2014:2010-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-2010.html
Issue date:        2014-12-18
CVE Names:         CVE-2014-9322 
=====================================================================

1. Summary:

Updated kernel packages that fix one security issue are now available for
Red Hat Enterprise Linux 7.

Red Hat Product Security 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

3. 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 handled GS segment register
base switching when recovering from a #SS (stack segment) fault on an
erroneous return to user space. A local, unprivileged user could use this
flaw to escalate their privileges on the system. (CVE-2014-9322, Important)

Red Hat would like to thank Andy Lutomirski for reporting this issue.

All kernel users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. 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/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/):

1172806 - CVE-2014-9322 kernel: x86: local privesc due to bad_iret and paranoid entry incompatibility

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
kernel-3.10.0-123.13.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.13.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.13.2.el7.x86_64.rpm
perf-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
kernel-doc-3.10.0-123.13.2.el7.noarch.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
kernel-3.10.0-123.13.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.13.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.13.2.el7.x86_64.rpm
perf-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
kernel-doc-3.10.0-123.13.2.el7.noarch.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-123.13.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.13.2.el7.noarch.rpm

ppc64:
kernel-3.10.0-123.13.2.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debug-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-123.13.2.el7.ppc64.rpm
kernel-devel-3.10.0-123.13.2.el7.ppc64.rpm
kernel-headers-3.10.0-123.13.2.el7.ppc64.rpm
kernel-tools-3.10.0-123.13.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
kernel-tools-libs-3.10.0-123.13.2.el7.ppc64.rpm
perf-3.10.0-123.13.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm

s390x:
kernel-3.10.0-123.13.2.el7.s390x.rpm
kernel-debug-3.10.0-123.13.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
kernel-debug-devel-3.10.0-123.13.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-123.13.2.el7.s390x.rpm
kernel-devel-3.10.0-123.13.2.el7.s390x.rpm
kernel-headers-3.10.0-123.13.2.el7.s390x.rpm
kernel-kdump-3.10.0-123.13.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-123.13.2.el7.s390x.rpm
perf-3.10.0-123.13.2.el7.s390x.rpm
perf-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.s390x.rpm

x86_64:
kernel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.13.2.el7.x86_64.rpm
perf-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
kernel-doc-3.10.0-123.13.2.el7.noarch.rpm

ppc64:
kernel-debug-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-123.13.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-123.13.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm
python-perf-3.10.0-123.13.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.ppc64.rpm

s390x:
kernel-debug-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-123.13.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
perf-debuginfo-3.10.0-123.13.2.el7.s390x.rpm
python-perf-3.10.0-123.13.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.s390x.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
kernel-3.10.0-123.13.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.13.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.13.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.13.2.el7.x86_64.rpm
perf-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
kernel-doc-3.10.0-123.13.2.el7.noarch.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.13.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-3.10.0-123.13.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.13.2.el7.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/

7. References:

https://access.redhat.com/security/cve/CVE-2014-9322
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2014 Red Hat, Inc.
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