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[RHSA-2016:1633-01] 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-2016:1633-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1633.html

Issue date: 2016-08-18

CVE Names: CVE-2016-5696

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

 

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.

 

It was found that the RFC 5961 challenge ACK rate limiting as implemented

in the Linux kernel's networking subsystem allowed an off-path attacker to

leak certain information about a given connection by creating congestion on

the global challenge ACK rate limit counter and then measuring the changes

by probing packets. An off-path attacker could use this flaw to either

terminate TCP connection and/or inject payload into non-secured TCP

connection between two endpoints on the network. (CVE-2016-5696, Important)

 

Red Hat would like to thank Yue Cao from Cyber Security Group in the CS

department of University of California, Riverside, for reporting this

issue.

 

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/):

 

1354708 - CVE-2016-5696 kernel: challenge ACK counter information disclosure.

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

kernel-3.10.0-327.28.3.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.28.3.el7.noarch.rpm

kernel-doc-3.10.0-327.28.3.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-headers-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.28.3.el7.x86_64.rpm

perf-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

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

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

kernel-3.10.0-327.28.3.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.28.3.el7.noarch.rpm

kernel-doc-3.10.0-327.28.3.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-headers-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.28.3.el7.x86_64.rpm

perf-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

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

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

kernel-3.10.0-327.28.3.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.28.3.el7.noarch.rpm

kernel-doc-3.10.0-327.28.3.el7.noarch.rpm

 

ppc64:

kernel-3.10.0-327.28.3.el7.ppc64.rpm

kernel-bootwrapper-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debug-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debuginfo-common-ppc64-3.10.0-327.28.3.el7.ppc64.rpm

kernel-devel-3.10.0-327.28.3.el7.ppc64.rpm

kernel-headers-3.10.0-327.28.3.el7.ppc64.rpm

kernel-tools-3.10.0-327.28.3.el7.ppc64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

kernel-tools-libs-3.10.0-327.28.3.el7.ppc64.rpm

perf-3.10.0-327.28.3.el7.ppc64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

python-perf-3.10.0-327.28.3.el7.ppc64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

 

ppc64le:

kernel-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-bootwrapper-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debug-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debuginfo-common-ppc64le-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-devel-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-headers-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-tools-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-tools-libs-3.10.0-327.28.3.el7.ppc64le.rpm

perf-3.10.0-327.28.3.el7.ppc64le.rpm

perf-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

python-perf-3.10.0-327.28.3.el7.ppc64le.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

 

s390x:

kernel-3.10.0-327.28.3.el7.s390x.rpm

kernel-debug-3.10.0-327.28.3.el7.s390x.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.s390x.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.s390x.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.s390x.rpm

kernel-debuginfo-common-s390x-3.10.0-327.28.3.el7.s390x.rpm

kernel-devel-3.10.0-327.28.3.el7.s390x.rpm

kernel-headers-3.10.0-327.28.3.el7.s390x.rpm

kernel-kdump-3.10.0-327.28.3.el7.s390x.rpm

kernel-kdump-debuginfo-3.10.0-327.28.3.el7.s390x.rpm

kernel-kdump-devel-3.10.0-327.28.3.el7.s390x.rpm

perf-3.10.0-327.28.3.el7.s390x.rpm

perf-debuginfo-3.10.0-327.28.3.el7.s390x.rpm

python-perf-3.10.0-327.28.3.el7.s390x.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.s390x.rpm

 

x86_64:

kernel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-headers-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.28.3.el7.x86_64.rpm

perf-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

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

 

ppc64:

kernel-debug-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

kernel-debuginfo-common-ppc64-3.10.0-327.28.3.el7.ppc64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

kernel-tools-libs-devel-3.10.0-327.28.3.el7.ppc64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.ppc64.rpm

 

ppc64le:

kernel-debug-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-debuginfo-common-ppc64le-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

kernel-tools-libs-devel-3.10.0-327.28.3.el7.ppc64le.rpm

perf-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.ppc64le.rpm

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

kernel-3.10.0-327.28.3.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.28.3.el7.noarch.rpm

kernel-doc-3.10.0-327.28.3.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-devel-3.10.0-327.28.3.el7.x86_64.rpm

kernel-headers-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.28.3.el7.x86_64.rpm

perf-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

 

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

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.28.3.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.28.3.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.28.3.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-2016-5696

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 2016 Red Hat, Inc.

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