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RedHat: RHSA-2014:0678-02 Important: Kernel Buffer Overflow

Redhat Large Esm H500
Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 7. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS)
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Hash: SHA1

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

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2014:0678-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2014:0678.html
Issue date:        2014-06-10
CVE Names:         CVE-2014-0196 
====================================================================
1. Summary:

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

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.

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 race condition flaw, leading to heap-based buffer overflows, was found
in the way the Linux kernel's N_TTY line discipline (LDISC) implementation
handled concurrent processing of echo output and TTY write operations
originating from user space when the underlying TTY driver was PTY.
An unprivileged, local user could use this flaw to crash the system or,
potentially, escalate their privileges on the system. (CVE-2014-0196,
Important)

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/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/):

1094232 - CVE-2014-0196 kernel: pty layer race condition leading to memory corruption

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
kernel-3.10.0-123.1.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.1.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.1.2.el7.x86_64.rpm
perf-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

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

noarch:
kernel-doc-3.10.0-123.1.2.el7.noarch.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
kernel-3.10.0-123.1.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.1.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.1.2.el7.x86_64.rpm
perf-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

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

noarch:
kernel-doc-3.10.0-123.1.2.el7.noarch.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-123.1.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.1.2.el7.noarch.rpm

ppc64:
kernel-3.10.0-123.1.2.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debug-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-123.1.2.el7.ppc64.rpm
kernel-devel-3.10.0-123.1.2.el7.ppc64.rpm
kernel-headers-3.10.0-123.1.2.el7.ppc64.rpm
kernel-tools-3.10.0-123.1.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
kernel-tools-libs-3.10.0-123.1.2.el7.ppc64.rpm
perf-3.10.0-123.1.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm

s390x:
kernel-3.10.0-123.1.2.el7.s390x.rpm
kernel-debug-3.10.0-123.1.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
kernel-debug-devel-3.10.0-123.1.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-123.1.2.el7.s390x.rpm
kernel-devel-3.10.0-123.1.2.el7.s390x.rpm
kernel-headers-3.10.0-123.1.2.el7.s390x.rpm
kernel-kdump-3.10.0-123.1.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-123.1.2.el7.s390x.rpm
perf-3.10.0-123.1.2.el7.s390x.rpm
perf-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.s390x.rpm

x86_64:
kernel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.1.2.el7.x86_64.rpm
perf-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

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

noarch:
kernel-doc-3.10.0-123.1.2.el7.noarch.rpm

ppc64:
kernel-debug-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-123.1.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-123.1.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm
python-perf-3.10.0-123.1.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.ppc64.rpm

s390x:
kernel-debug-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-123.1.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
perf-debuginfo-3.10.0-123.1.2.el7.s390x.rpm
python-perf-3.10.0-123.1.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.s390x.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
kernel-3.10.0-123.1.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-123.1.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-devel-3.10.0-123.1.2.el7.x86_64.rpm
kernel-headers-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-123.1.2.el7.x86_64.rpm
perf-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm

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

noarch:
kernel-doc-3.10.0-123.1.2.el7.noarch.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-123.1.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-3.10.0-123.1.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-123.1.2.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/#package

7. References:

https://access.redhat.com/security/cve/CVE-2014-0196
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2014 Red Hat, Inc.
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RedHat: RHSA-2014:0678-02 Important: Kernel Buffer Overflow

red hat
Calendar Grey June 10, 2014
Dist Redhat Esm H88
Red Hat kernel patch addresses critical vulnerability; system restart needed to implement changes. Maintain your security!
Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 7

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
* A race condition flaw, leading to heap-based buffer overflows, was found in the way the Linux kernel's N_TTY line discipline (LDISC) implementation handled concurrent processing of echo output and TTY write operations originating from user space when the underlying TTY driver was PTY. An unprivileged, local user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-0196, Important)
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.

References

https://access.redhat.com/security/cve/CVE-2014-0196 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-123.1.2.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-123.1.2.el7.noarch.rpm
x86_64: kernel-3.10.0-123.1.2.el7.x86_64.rpm kernel-debug-3.10.0-123.1.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-123.1.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm kernel-devel-3.10.0-123.1.2.el7.x86_64.rpm kernel-headers-3.10.0-123.1.2.el7.x86_64.rpm kernel-tools-3.10.0-123.1.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-123.1.2.el7.x86_64.rpm perf-3.10.0-123.1.2.el7.x86_64.rpm perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: kernel-doc-3.10.0-123.1.2.el7.noarch.rpm
x86_64: kernel-debug-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-123.1.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-123.1.2.el7.x86_64.rpm perf-debuginfo-3.10.0-123.1.2.el7.x86_64.rpm python-perf-3.10.0-123.1.2.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2014:0678-02
Product: Red Hat Enterprise Linux
Issue date: 2014-06-10

Topic

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

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

Bugs Fixed

1094232 - CVE-2014-0196 kernel: pty layer race condition leading to memory corruption

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