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Red Hat Enterprise Linux 7 RHSA-2016:2098-01 Critical Privilege Escalation

Redhat Large Esm H500
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
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis:          Important: kernel security update
Advisory ID:       RHSA-2016:2098-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2016:2098.html
Issue date:        2016-10-24
CVE Names:         CVE-2016-5195 
====================================================================
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):

* A race condition was found in the way the Linux kernel's memory subsystem
handled the copy-on-write (COW) breakage of private read-only memory
mappings. An unprivileged, local user could use this flaw to gain write
access to otherwise read-only memory mappings and thus increase their
privileges on the system. (CVE-2016-5195, Important)

Red Hat would like to thank Phil Oester 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/):

1384344 - CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
kernel-3.10.0-327.36.3.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.3.el7.noarch.rpm
kernel-doc-3.10.0-327.36.3.el7.noarch.rpm

x86_64:
kernel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-headers-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.36.3.el7.x86_64.rpm
perf-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

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

x86_64:
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
kernel-3.10.0-327.36.3.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.3.el7.noarch.rpm
kernel-doc-3.10.0-327.36.3.el7.noarch.rpm

x86_64:
kernel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-headers-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.36.3.el7.x86_64.rpm
perf-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

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

x86_64:
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
kernel-3.10.0-327.36.3.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.3.el7.noarch.rpm
kernel-doc-3.10.0-327.36.3.el7.noarch.rpm

ppc64:
kernel-3.10.0-327.36.3.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debug-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-327.36.3.el7.ppc64.rpm
kernel-devel-3.10.0-327.36.3.el7.ppc64.rpm
kernel-headers-3.10.0-327.36.3.el7.ppc64.rpm
kernel-tools-3.10.0-327.36.3.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
kernel-tools-libs-3.10.0-327.36.3.el7.ppc64.rpm
perf-3.10.0-327.36.3.el7.ppc64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
python-perf-3.10.0-327.36.3.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debug-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-devel-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-headers-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-tools-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-327.36.3.el7.ppc64le.rpm
perf-3.10.0-327.36.3.el7.ppc64le.rpm
perf-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
python-perf-3.10.0-327.36.3.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm

s390x:
kernel-3.10.0-327.36.3.el7.s390x.rpm
kernel-debug-3.10.0-327.36.3.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.s390x.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.s390x.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-327.36.3.el7.s390x.rpm
kernel-devel-3.10.0-327.36.3.el7.s390x.rpm
kernel-headers-3.10.0-327.36.3.el7.s390x.rpm
kernel-kdump-3.10.0-327.36.3.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-327.36.3.el7.s390x.rpm
kernel-kdump-devel-3.10.0-327.36.3.el7.s390x.rpm
perf-3.10.0-327.36.3.el7.s390x.rpm
perf-debuginfo-3.10.0-327.36.3.el7.s390x.rpm
python-perf-3.10.0-327.36.3.el7.s390x.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.s390x.rpm

x86_64:
kernel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-headers-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.36.3.el7.x86_64.rpm
perf-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

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

ppc64:
kernel-debug-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-327.36.3.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-327.36.3.el7.ppc64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-327.36.3.el7.ppc64le.rpm
perf-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
kernel-3.10.0-327.36.3.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-327.36.3.el7.noarch.rpm
kernel-doc-3.10.0-327.36.3.el7.noarch.rpm

x86_64:
kernel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debug-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-devel-3.10.0-327.36.3.el7.x86_64.rpm
kernel-headers-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-3.10.0-327.36.3.el7.x86_64.rpm
perf-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

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

x86_64:
kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-327.36.3.el7.x86_64.rpm
perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-327.36.3.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-2016-5195
https://access.redhat.com/security/updates/classification#important
https://access.redhat.com/security/vulnerabilities/DirtyCow

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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Red Hat Enterprise Linux 7 RHSA-2016:2098-01 Critical Privilege Escalation

red hat
Calendar Grey October 24, 2016
Dist Redhat Esm H88
The Debian security notification has issued significant updates addressing vulnerabilities in packages. Urgent measures recommended.
An update for kernel is now available for Red Hat Enterprise Linux 7

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. (CVE-2016-5195, Important)
Red Hat would like to thank Phil Oester for reporting this issue.

References

https://access.redhat.com/security/cve/CVE-2016-5195 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/DirtyCow

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-327.36.3.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-327.36.3.el7.noarch.rpm kernel-doc-3.10.0-327.36.3.el7.noarch.rpm
x86_64: kernel-3.10.0-327.36.3.el7.x86_64.rpm kernel-debug-3.10.0-327.36.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.36.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm kernel-devel-3.10.0-327.36.3.el7.x86_64.rpm kernel-headers-3.10.0-327.36.3.el7.x86_64.rpm kernel-tools-3.10.0-327.36.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.36.3.el7.x86_64.rpm perf-3.10.0-327.36.3.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm python-perf-3.10.0-327.36.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.36.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.36.3.el7.x86_64.rpm perf-debuginfo-3.10.0-327.36.3.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:2098-01
Product: Red Hat Enterprise Linux
Issue date: 2016-10-24

Topic

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) 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) - 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

Bugs Fixed

1384344 - CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage

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