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[RHSA-2017:0031-01] Important: kernel security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2017:0031-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0031.html

Issue date: 2017-01-10

CVE Names: CVE-2016-7117

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

 

1. Summary:

 

An update for kernel is now available for Red Hat Enterprise Linux 6.7

Extended Update Support.

 

Red Hat Product Security has rated this update as having a security impact

of Important. A Common Vulnerability Scoring System (CVSS) base score,

which gives a detailed severity rating, is available for each vulnerability

from the CVE link(s) in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux HPC Node EUS (v. 6.7) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64

Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

Security Fix(es):

 

* A use-after-free vulnerability was found in the kernels socket recvmmsg

subsystem. This may allow remote attackers to corrupt memory and may allow

execution of arbitrary code. This corruption takes place during the error

handling routines within __sys_recvmmsg() function. (CVE-2016-7117,

Important)

 

Bug Fix(es):

 

* Previously, guest virtual machines (VMs) on a Hyper-V server cluster got

in some cases rebooted during the graceful node failover test, because the

host kept sending heartbeat packets independently of guests responding to

them. This update fixes the bug by properly responding to all the heartbeat

messages in the queue, even if they are pending. As a result, guest VMs no

longer get rebooted under the described circumstances. (BZ#1397737)

 

* From Red Hat Enterprise Linux 6.6 to 6.8, the IPv6 routing cache

occasionally showed incorrect values. This update fixes the DST_NOCOUNT

mechanism, and the IPv6 routing cache now shows correct values.

(BZ#1391973)

 

* Previously, memory corruption by copying data into the wrong memory

locations sometimes occurred, because the __copy_tofrom_user() function was

returning incorrect values. This update fixes the __copy_tofrom_user()

function so that it no longer returns larger values than the number of

bytes it was asked to copy. As a result, memory corruption no longer occurs

in he described scenario. (BZ#1398182)

 

4. Solution:

 

For details on how to apply this update, which includes the changes

described in this advisory, refer to:

 

https://access.redhat.com/articles/11258

 

The system must be rebooted for this update to take effect.

 

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

 

1382268 - CVE-2016-7117 kernel: Use-after-free in the recvmmsg exit path

 

6. Package List:

 

Red Hat Enterprise Linux HPC Node EUS (v. 6.7):

 

Source:

kernel-2.6.32-573.38.1.el6.src.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-573.38.1.el6.noarch.rpm

kernel-doc-2.6.32-573.38.1.el6.noarch.rpm

kernel-firmware-2.6.32-573.38.1.el6.noarch.rpm

 

x86_64:

kernel-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debug-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.38.1.el6.x86_64.rpm

kernel-devel-2.6.32-573.38.1.el6.x86_64.rpm

kernel-headers-2.6.32-573.38.1.el6.x86_64.rpm

perf-2.6.32-573.38.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7):

 

x86_64:

kernel-debug-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.38.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

python-perf-2.6.32-573.38.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server EUS (v. 6.7):

 

Source:

kernel-2.6.32-573.38.1.el6.src.rpm

 

i386:

kernel-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.38.1.el6.i686.rpm

kernel-devel-2.6.32-573.38.1.el6.i686.rpm

kernel-headers-2.6.32-573.38.1.el6.i686.rpm

perf-2.6.32-573.38.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

 

noarch:

kernel-abi-whitelists-2.6.32-573.38.1.el6.noarch.rpm

kernel-doc-2.6.32-573.38.1.el6.noarch.rpm

kernel-firmware-2.6.32-573.38.1.el6.noarch.rpm

 

ppc64:

kernel-2.6.32-573.38.1.el6.ppc64.rpm

kernel-bootwrapper-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debug-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-573.38.1.el6.ppc64.rpm

kernel-devel-2.6.32-573.38.1.el6.ppc64.rpm

kernel-headers-2.6.32-573.38.1.el6.ppc64.rpm

perf-2.6.32-573.38.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

 

s390x:

kernel-2.6.32-573.38.1.el6.s390x.rpm

kernel-debug-2.6.32-573.38.1.el6.s390x.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-573.38.1.el6.s390x.rpm

kernel-devel-2.6.32-573.38.1.el6.s390x.rpm

kernel-headers-2.6.32-573.38.1.el6.s390x.rpm

kernel-kdump-2.6.32-573.38.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

kernel-kdump-devel-2.6.32-573.38.1.el6.s390x.rpm

perf-2.6.32-573.38.1.el6.s390x.rpm

perf-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

 

x86_64:

kernel-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debug-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.i686.rpm

kernel-debug-devel-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-common-i686-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.38.1.el6.x86_64.rpm

kernel-devel-2.6.32-573.38.1.el6.x86_64.rpm

kernel-headers-2.6.32-573.38.1.el6.x86_64.rpm

perf-2.6.32-573.38.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional EUS (v. 6.7):

 

i386:

kernel-debug-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.i686.rpm

kernel-debuginfo-common-i686-2.6.32-573.38.1.el6.i686.rpm

perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

python-perf-2.6.32-573.38.1.el6.i686.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.i686.rpm

 

ppc64:

kernel-debug-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

kernel-debuginfo-common-ppc64-2.6.32-573.38.1.el6.ppc64.rpm

perf-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

python-perf-2.6.32-573.38.1.el6.ppc64.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

kernel-debuginfo-common-s390x-2.6.32-573.38.1.el6.s390x.rpm

kernel-kdump-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

perf-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

python-perf-2.6.32-573.38.1.el6.s390x.rpm

python-perf-debuginfo-2.6.32-573.38.1.el6.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

kernel-debuginfo-common-x86_64-2.6.32-573.38.1.el6.x86_64.rpm

perf-debuginfo-2.6.32-573.38.1.el6.x86_64.rpm

python-perf-2.6.32-573.38.1.el6.x86_64.rpm

python-perf-debuginfo-2.6.32-573.38.1.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2016-7117

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 2017 Red Hat, Inc.

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