Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.0497
Linux kernel vulnerabilities
23 February 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-6074 CVE-2017-5549 CVE-2017-2584
CVE-2017-2583 CVE-2016-10088 CVE-2016-9588
CVE-2016-9191 CVE-2016-7911 CVE-2016-7910
Reference: ASB-2016.0103
ESB-2017.0486
ESB-2017.0485
ESB-2017.0468
Original Bulletin:
http://www.ubuntu.com/usn/usn-3206-1
http://www.ubuntu.com/usn/usn-3209-1
http://www.ubuntu.com/usn/usn-3208-2
http://www.ubuntu.com/usn/usn-3208-1
http://www.ubuntu.com/usn/usn-3207-2
http://www.ubuntu.com/usn/usn-3207-1
Comment: This bulletin contains six (6) Ubuntu security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
==========================================================================
Ubuntu Security Notice USN-3206-1
February 22, 2017
linux, linux-ti-omap4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux: Linux kernel
- - linux-ti-omap4: Linux kernel for OMAP4
Details:
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.2.0-123-generic 3.2.0-123.166
linux-image-3.2.0-123-generic-pae 3.2.0-123.166
linux-image-3.2.0-123-highbank 3.2.0-123.166
linux-image-3.2.0-123-omap 3.2.0-123.166
linux-image-3.2.0-123-powerpc-smp 3.2.0-123.166
linux-image-3.2.0-123-powerpc64-smp 3.2.0-123.166
linux-image-3.2.0-123-virtual 3.2.0-123.166
linux-image-3.2.0-1501-omap4 3.2.0-1501.128
linux-image-generic 3.2.0.123.138
linux-image-generic-pae 3.2.0.123.138
linux-image-highbank 3.2.0.123.138
linux-image-omap 3.2.0.123.138
linux-image-omap4 3.2.0.1501.96
linux-image-powerpc-smp 3.2.0.123.138
linux-image-powerpc64-smp 3.2.0.123.138
linux-image-virtual 3.2.0.123.138
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-3206-1
CVE-2016-7910, CVE-2016-7911, CVE-2017-6074
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-123.166
https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.2.0-1501.128
==========================================================================
==========================================================================
Ubuntu Security Notice USN-3207-1
February 22, 2017
linux vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux: Linux kernel
Details:
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-3.13.0-110-generic 3.13.0-110.157
linux-image-3.13.0-110-generic-lpae 3.13.0-110.157
linux-image-3.13.0-110-lowlatency 3.13.0-110.157
linux-image-3.13.0-110-powerpc-e500 3.13.0-110.157
linux-image-3.13.0-110-powerpc-e500mc 3.13.0-110.157
linux-image-3.13.0-110-powerpc-smp 3.13.0-110.157
linux-image-3.13.0-110-powerpc64-emb 3.13.0-110.157
linux-image-3.13.0-110-powerpc64-smp 3.13.0-110.157
linux-image-generic 3.13.0.110.118
linux-image-generic-lpae 3.13.0.110.118
linux-image-highbank 3.13.0.110.118
linux-image-lowlatency 3.13.0.110.118
linux-image-powerpc-e500 3.13.0.110.118
linux-image-powerpc-e500mc 3.13.0.110.118
linux-image-powerpc-smp 3.13.0.110.118
linux-image-powerpc64-emb 3.13.0.110.118
linux-image-powerpc64-smp 3.13.0.110.118
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-3207-1
CVE-2016-7910, CVE-2016-7911, CVE-2017-6074
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-110.157
==========================================================================
==========================================================================
Ubuntu Security Notice USN-3207-2
February 22, 2017
linux-lts-trusty vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise
Details:
USN-3207-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
12.04 LTS.
It was discovered that a use-after-free vulnerability existed in the block
device layer of the Linux kernel. A local attacker could use this to cause
a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2016-7910)
Dmitry Vyukov discovered a use-after-free vulnerability in the
sys_ioprio_get() function in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2016-7911)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.13.0-110-generic 3.13.0-110.157~precise1
linux-image-3.13.0-110-generic-lpae 3.13.0-110.157~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.110.101
linux-image-generic-lts-trusty 3.13.0.110.101
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-3207-2
http://www.ubuntu.com/usn/usn-3207-1
CVE-2016-7910, CVE-2016-7911, CVE-2017-6074
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-110.157~precise1
==========================================================================
==========================================================================
Ubuntu Security Notice USN-3208-1
February 22, 2017
linux, linux-snapdragon vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux: Linux kernel
- - linux-snapdragon: Linux kernel for Snapdragon Processors
Details:
It was discovered that the generic SCSI block layer in the Linux kernel did
not properly restrict write operations in certain situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2016-10088)
CAI Qian discovered that the sysctl implementation in the Linux kernel did
not properly perform reference counting in some situations. An unprivileged
attacker could use this to cause a denial of service (system hang).
(CVE-2016-9191)
Jim Mattson discovered that the KVM implementation in the Linux kernel
mismanages the #BP and #OF exceptions. A local attacker in a guest virtual
machine could use this to cause a denial of service (guest OS crash).
(CVE-2016-9588)
Andy Lutomirski and Willy Tarreau discovered that the KVM implementation in
the Linux kernel did not properly emulate instructions on the SS segment
register. A local attacker in a guest virtual machine could use this to
cause a denial of service (guest OS crash) or possibly gain administrative
privileges in the guest OS. (CVE-2017-2583)
Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
improperly emulated certain instructions. A local attacker could use this
to obtain sensitive information (kernel memory). (CVE-2017-2584)
It was discovered that the KLSI KL5KUSB105 serial-to-USB device driver in
the Linux kernel did not properly initialize memory related to logging. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2017-5549)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
linux-image-4.4.0-1048-snapdragon 4.4.0-1048.52
linux-image-4.4.0-64-generic 4.4.0-64.85
linux-image-4.4.0-64-generic-lpae 4.4.0-64.85
linux-image-4.4.0-64-lowlatency 4.4.0-64.85
linux-image-4.4.0-64-powerpc-e500mc 4.4.0-64.85
linux-image-4.4.0-64-powerpc-smp 4.4.0-64.85
linux-image-4.4.0-64-powerpc64-emb 4.4.0-64.85
linux-image-4.4.0-64-powerpc64-smp 4.4.0-64.85
linux-image-generic 4.4.0.64.68
linux-image-generic-lpae 4.4.0.64.68
linux-image-lowlatency 4.4.0.64.68
linux-image-powerpc-e500mc 4.4.0.64.68
linux-image-powerpc-smp 4.4.0.64.68
linux-image-powerpc64-emb 4.4.0.64.68
linux-image-powerpc64-smp 4.4.0.64.68
linux-image-snapdragon 4.4.0.1048.40
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-3208-1
CVE-2016-10088, CVE-2016-9191, CVE-2016-9588, CVE-2017-2583,
CVE-2017-2584, CVE-2017-5549, CVE-2017-6074
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-64.85
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1048.52
==========================================================================
==========================================================================
Ubuntu Security Notice USN-3208-2
February 22, 2017
linux-lts-xenial vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
USN-3208-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.
It was discovered that the generic SCSI block layer in the Linux kernel did
not properly restrict write operations in certain situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2016-10088)
CAI Qian discovered that the sysctl implementation in the Linux kernel did
not properly perform reference counting in some situations. An unprivileged
attacker could use this to cause a denial of service (system hang).
(CVE-2016-9191)
Jim Mattson discovered that the KVM implementation in the Linux kernel
mismanages the #BP and #OF exceptions. A local attacker in a guest virtual
machine could use this to cause a denial of service (guest OS crash).
(CVE-2016-9588)
Andy Lutomirski and Willy Tarreau discovered that the KVM implementation in
the Linux kernel did not properly emulate instructions on the SS segment
register. A local attacker in a guest virtual machine could use this to
cause a denial of service (guest OS crash) or possibly gain administrative
privileges in the guest OS. (CVE-2017-2583)
Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
improperly emulated certain instructions. A local attacker could use this
to obtain sensitive information (kernel memory). (CVE-2017-2584)
It was discovered that the KLSI KL5KUSB105 serial-to-USB device driver in
the Linux kernel did not properly initialize memory related to logging. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2017-5549)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-4.4.0-64-generic 4.4.0-64.85~14.04.1
linux-image-4.4.0-64-generic-lpae 4.4.0-64.85~14.04.1
linux-image-4.4.0-64-lowlatency 4.4.0-64.85~14.04.1
linux-image-4.4.0-64-powerpc-e500mc 4.4.0-64.85~14.04.1
linux-image-4.4.0-64-powerpc-smp 4.4.0-64.85~14.04.1
linux-image-4.4.0-64-powerpc64-emb 4.4.0-64.85~14.04.1
linux-image-4.4.0-64-powerpc64-smp 4.4.0-64.85~14.04.1
linux-image-generic-lpae-lts-xenial 4.4.0.64.50
linux-image-generic-lts-xenial 4.4.0.64.50
linux-image-lowlatency-lts-xenial 4.4.0.64.50
linux-image-powerpc-e500mc-lts-xenial 4.4.0.64.50
linux-image-powerpc-smp-lts-xenial 4.4.0.64.50
linux-image-powerpc64-emb-lts-xenial 4.4.0.64.50
linux-image-powerpc64-smp-lts-xenial 4.4.0.64.50
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-3208-2
http://www.ubuntu.com/usn/usn-3208-1
CVE-2016-10088, CVE-2016-9191, CVE-2016-9588, CVE-2017-2583,
CVE-2017-2584, CVE-2017-5549, CVE-2017-6074
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-64.85~14.04.1
==========================================================================
==========================================================================
Ubuntu Security Notice USN-3209-1
February 22, 2017
linux, linux-raspi2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.10
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux: Linux kernel
- - linux-raspi2: Linux kernel for Raspberry Pi 2
Details:
It was discovered that the generic SCSI block layer in the Linux kernel did
not properly restrict write operations in certain situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2016-10088)
Jim Mattson discovered that the KVM implementation in the Linux kernel
mismanages the #BP and #OF exceptions. A local attacker in a guest virtual
machine could use this to cause a denial of service (guest OS crash).
(CVE-2016-9588)
Andrey Konovalov discovered a use-after-free vulnerability in the DCCP
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly gain administrative
privileges. (CVE-2017-6074)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.10:
linux-image-4.8.0-1026-raspi2 4.8.0-1026.29
linux-image-4.8.0-39-generic 4.8.0-39.42
linux-image-4.8.0-39-generic-lpae 4.8.0-39.42
linux-image-4.8.0-39-lowlatency 4.8.0-39.42
linux-image-4.8.0-39-powerpc-e500mc 4.8.0-39.42
linux-image-4.8.0-39-powerpc-smp 4.8.0-39.42
linux-image-4.8.0-39-powerpc64-emb 4.8.0-39.42
linux-image-generic 4.8.0.39.50
linux-image-generic-lpae 4.8.0.39.50
linux-image-lowlatency 4.8.0.39.50
linux-image-powerpc-e500mc 4.8.0.39.50
linux-image-powerpc-smp 4.8.0.39.50
linux-image-powerpc64-emb 4.8.0.39.50
linux-image-raspi2 4.8.0.1026.29
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-3209-1
CVE-2016-10088, CVE-2016-9588, CVE-2017-6074
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.8.0-39.42
https://launchpad.net/ubuntu/+source/linux-raspi2/4.8.0-1026.29
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=nwVD
-----END PGP SIGNATURE-----