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Red Hat Security Advisory

Synopsis: Important: kernel security update
Advisory ID: RHSA-2016:2047-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2047.html
Issue date: 2016-10-10
CVE Names: CVE-2016-7039
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) – noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) – ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) – x86_64

3. Description:

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

Security Fix(es):

* Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR
Virtual eXtensible Local Area Network(CONFIG_VXLAN) with Transparent
Ethernet Bridging(TEB) GRO support, is vulnerable to a stack overflow
issue. It could occur while receiving large packets via GRO path as an
unlimited recursion could unfold in both VLAN and TEB modules leading to a
stack corruption in the kernel. (CVE-2016-7039, Important)

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/):

1375944 – CVE-2016-7039 kernel: remotely triggerable unbounded recursion in the vlan gro code leading to a kernel crash

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
kernel-3.10.0-327.36.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.2.el7.noarch.rpm
kernel-doc-3.10.0-327.36.2.el7.noarch.rpm

x86_64:
kernel-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debug-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.2.el7.x86_64.rpm
kernel-devel-3.10.0-327.36.2.el7.x86_64.rpm
kernel-headers-3.10.0-327.36.2.el7.x86_64.rpm
kernel-tools-3.10.0-327.36.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.36.2.el7.x86_64.rpm
perf-3.10.0-327.36.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
python-perf-3.10.0-327.36.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm

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

x86_64:
kernel-debug-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.36.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
kernel-3.10.0-327.36.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.2.el7.noarch.rpm
kernel-doc-3.10.0-327.36.2.el7.noarch.rpm

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

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-327.36.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.2.el7.noarch.rpm
kernel-doc-3.10.0-327.36.2.el7.noarch.rpm

ppc64:
kernel-3.10.0-327.36.2.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debug-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debug-devel-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-327.36.2.el7.ppc64.rpm
kernel-devel-3.10.0-327.36.2.el7.ppc64.rpm
kernel-headers-3.10.0-327.36.2.el7.ppc64.rpm
kernel-tools-3.10.0-327.36.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
kernel-tools-libs-3.10.0-327.36.2.el7.ppc64.rpm
perf-3.10.0-327.36.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
python-perf-3.10.0-327.36.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debug-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-devel-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-headers-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-tools-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-327.36.2.el7.ppc64le.rpm
perf-3.10.0-327.36.2.el7.ppc64le.rpm
perf-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
python-perf-3.10.0-327.36.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm

s390x:
kernel-3.10.0-327.36.2.el7.s390x.rpm
kernel-debug-3.10.0-327.36.2.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-327.36.2.el7.s390x.rpm
kernel-debug-devel-3.10.0-327.36.2.el7.s390x.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-327.36.2.el7.s390x.rpm
kernel-devel-3.10.0-327.36.2.el7.s390x.rpm
kernel-headers-3.10.0-327.36.2.el7.s390x.rpm
kernel-kdump-3.10.0-327.36.2.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-327.36.2.el7.s390x.rpm
kernel-kdump-devel-3.10.0-327.36.2.el7.s390x.rpm
perf-3.10.0-327.36.2.el7.s390x.rpm
perf-debuginfo-3.10.0-327.36.2.el7.s390x.rpm
python-perf-3.10.0-327.36.2.el7.s390x.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.s390x.rpm

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

ppc64:
kernel-debug-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-327.36.2.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-327.36.2.el7.ppc64.rpm
perf-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-327.36.2.el7.ppc64le.rpm
perf-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-327.36.2.el7.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
kernel-3.10.0-327.36.2.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.2.el7.noarch.rpm
kernel-doc-3.10.0-327.36.2.el7.noarch.rpm

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

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-2016-7039
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/

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