Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.1240
Important: kernel security update
17 May 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux WS/Desktop 6
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-2636
Reference: ESB-2017.1031
ESB-2017.0990
ESB-2017.0950
ESB-2017.0949
Original Bulletin:
https://access.redhat.com/errata/RHSA-2017:1232
https://access.redhat.com/errata/RHSA-2017:1233
Comment: This bulletin contains two (2) Red Hat security advisories.
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Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security update
Advisory ID: RHSA-2017:1232-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1232
Issue date: 2017-05-16
CVE Names: CVE-2017-2636
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 6.5
Advanced Update Support and Red Hat Enterprise Linux 6.5 Telco 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 Server AUS (v. 6.5) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server TUS (v. 6.5) - noarch, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* A race condition flaw was found in the N_HLDC Linux kernel driver when
accessing n_hdlc.tbuf list that can lead to double free. A local,
unprivileged user able to set the HDLC line discipline on the tty device
could use this flaw to increase their privileges on the system.
(CVE-2017-2636, Important)
Red Hat would like to thank Alexander Popov 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/):
1428319 - CVE-2017-2636 kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release()
6. Package List:
Red Hat Enterprise Linux Server AUS (v. 6.5):
Source:
kernel-2.6.32-431.80.1.el6.src.rpm
noarch:
kernel-abi-whitelists-2.6.32-431.80.1.el6.noarch.rpm
kernel-doc-2.6.32-431.80.1.el6.noarch.rpm
kernel-firmware-2.6.32-431.80.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debug-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-431.80.1.el6.x86_64.rpm
kernel-devel-2.6.32-431.80.1.el6.x86_64.rpm
kernel-headers-2.6.32-431.80.1.el6.x86_64.rpm
perf-2.6.32-431.80.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 6.5):
Source:
kernel-2.6.32-431.80.1.el6.src.rpm
noarch:
kernel-abi-whitelists-2.6.32-431.80.1.el6.noarch.rpm
kernel-doc-2.6.32-431.80.1.el6.noarch.rpm
kernel-firmware-2.6.32-431.80.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debug-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-431.80.1.el6.x86_64.rpm
kernel-devel-2.6.32-431.80.1.el6.x86_64.rpm
kernel-headers-2.6.32-431.80.1.el6.x86_64.rpm
perf-2.6.32-431.80.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.5):
Source:
kernel-2.6.32-431.80.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-431.80.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
python-perf-2.6.32-431.80.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 6.5):
Source:
kernel-2.6.32-431.80.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-431.80.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-431.80.1.el6.x86_64.rpm
python-perf-2.6.32-431.80.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-431.80.1.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-2017-2636
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/
Copyright 2017 Red Hat, Inc.
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==============================================================================
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Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security update
Advisory ID: RHSA-2017:1233-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1233
Issue date: 2017-05-16
CVE Names: CVE-2017-2636
=====================================================================
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 race condition flaw was found in the N_HLDC Linux kernel driver when
accessing n_hdlc.tbuf list that can lead to double free. A local,
unprivileged user able to set the HDLC line discipline on the tty device
could use this flaw to increase their privileges on the system.
(CVE-2017-2636, Important)
Red Hat would like to thank Alexander Popov 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/):
1428319 - CVE-2017-2636 kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release()
6. Package List:
Red Hat Enterprise Linux HPC Node EUS (v. 6.7):
Source:
kernel-2.6.32-573.42.1.el6.src.rpm
noarch:
kernel-abi-whitelists-2.6.32-573.42.1.el6.noarch.rpm
kernel-doc-2.6.32-573.42.1.el6.noarch.rpm
kernel-firmware-2.6.32-573.42.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debug-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.1.el6.x86_64.rpm
kernel-devel-2.6.32-573.42.1.el6.x86_64.rpm
kernel-headers-2.6.32-573.42.1.el6.x86_64.rpm
perf-2.6.32-573.42.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7):
x86_64:
kernel-debug-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
python-perf-2.6.32-573.42.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 6.7):
Source:
kernel-2.6.32-573.42.1.el6.src.rpm
i386:
kernel-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.1.el6.i686.rpm
kernel-devel-2.6.32-573.42.1.el6.i686.rpm
kernel-headers-2.6.32-573.42.1.el6.i686.rpm
perf-2.6.32-573.42.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
noarch:
kernel-abi-whitelists-2.6.32-573.42.1.el6.noarch.rpm
kernel-doc-2.6.32-573.42.1.el6.noarch.rpm
kernel-firmware-2.6.32-573.42.1.el6.noarch.rpm
ppc64:
kernel-2.6.32-573.42.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debug-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.42.1.el6.ppc64.rpm
kernel-devel-2.6.32-573.42.1.el6.ppc64.rpm
kernel-headers-2.6.32-573.42.1.el6.ppc64.rpm
perf-2.6.32-573.42.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
s390x:
kernel-2.6.32-573.42.1.el6.s390x.rpm
kernel-debug-2.6.32-573.42.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.42.1.el6.s390x.rpm
kernel-devel-2.6.32-573.42.1.el6.s390x.rpm
kernel-headers-2.6.32-573.42.1.el6.s390x.rpm
kernel-kdump-2.6.32-573.42.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-573.42.1.el6.s390x.rpm
perf-2.6.32-573.42.1.el6.s390x.rpm
perf-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
x86_64:
kernel-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debug-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.i686.rpm
kernel-debug-devel-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.1.el6.x86_64.rpm
kernel-devel-2.6.32-573.42.1.el6.x86_64.rpm
kernel-headers-2.6.32-573.42.1.el6.x86_64.rpm
perf-2.6.32-573.42.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 6.7):
i386:
kernel-debug-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.42.1.el6.i686.rpm
perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
python-perf-2.6.32-573.42.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.i686.rpm
ppc64:
kernel-debug-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.42.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
python-perf-2.6.32-573.42.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.ppc64.rpm
s390x:
kernel-debug-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.42.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
perf-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
python-perf-2.6.32-573.42.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.42.1.el6.s390x.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.42.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.42.1.el6.x86_64.rpm
python-perf-2.6.32-573.42.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.42.1.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-2017-2636
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/
Copyright 2017 Red Hat, Inc.
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