Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.3143.2
Linux kernel vulnerabilities
18 December 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-1000405 CVE-2017-16939 CVE-2017-16643
CVE-2017-16535 CVE-2017-15951 CVE-2017-15306
CVE-2017-15299 CVE-2017-12193 CVE-2017-12146
Reference: ESB-2017.3129
ESB-2017.3104
Original Bulletin:
http://www.ubuntu.com/usn/usn-3507-1
http://www.ubuntu.com/usn/usn-3508-1
http://www.ubuntu.com/usn/usn-3509-1
http://www.ubuntu.com/usn/usn-3509-2
http://www.ubuntu.com/usn/usn-3510-1
http://www.ubuntu.com/usn/usn-3510-2
http://www.ubuntu.com/usn/usn-3509-3
http://www.ubuntu.com/usn/usn-3509-4
Comment: This bulletin contains eight (8) Ubuntu security advisories.
Revision History: December 18 2017: Regression patched which broke Ceph network filesystem in 14.04 LTS and 16.04 LTS
December 8 2017: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
==========================================================================
Ubuntu Security Notice USN-3507-1
December 07, 2017
linux, linux-raspi2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.10
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- - linux: Linux kernel
- - linux-raspi2: Linux kernel for Raspberry Pi 2
Details:
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)
Eric Biggers discovered that the key management subsystem in the Linux
kernel did not properly restrict adding a key that already exists but is
uninstantiated. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2017-15299)
It was discovered that a null pointer dereference error existed in the
PowerPC KVM implementation in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash). (CVE-2017-15306)
Eric Biggers discovered a race condition in the key management subsystem of
the Linux kernel around keys in a negative state. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-15951)
Andrey Konovalov discovered that the USB subsystem in the Linux kernel did
not properly validate USB BOS metadata. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2017-16535)
Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB
driver for the Linux kernel. A physically proximate attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16643)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.10:
linux-image-4.13.0-1008-raspi2 4.13.0-1008.8
linux-image-4.13.0-19-generic 4.13.0-19.22
linux-image-4.13.0-19-generic-lpae 4.13.0-19.22
linux-image-4.13.0-19-lowlatency 4.13.0-19.22
linux-image-generic 4.13.0.19.20
linux-image-generic-lpae 4.13.0.19.20
linux-image-lowlatency 4.13.0.19.20
linux-image-raspi2 4.13.0.1008.6
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:
https://www.ubuntu.com/usn/usn-3507-1
CVE-2017-1000405, CVE-2017-12193, CVE-2017-15299, CVE-2017-15306,
CVE-2017-15951, CVE-2017-16535, CVE-2017-16643, CVE-2017-16939
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.13.0-19.22
https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1008.8
- ---------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3508-1
December 07, 2017
linux, linux-raspi2 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- - linux: Linux kernel
- - linux-raspi2: Linux kernel for Raspberry Pi 2
Details:
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Yonggang Guo discovered that a race condition existed in the driver
subsystem in the Linux kernel. A local attacker could use this to possibly
gain administrative privileges. (CVE-2017-12146)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
linux-image-4.10.0-1023-raspi2 4.10.0-1023.26
linux-image-4.10.0-42-generic 4.10.0-42.46
linux-image-4.10.0-42-generic-lpae 4.10.0-42.46
linux-image-4.10.0-42-lowlatency 4.10.0-42.46
linux-image-generic 4.10.0.42.42
linux-image-generic-lpae 4.10.0.42.42
linux-image-lowlatency 4.10.0.42.42
linux-image-raspi2 4.10.0.1023.24
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:
https://www.ubuntu.com/usn/usn-3508-1
CVE-2017-1000405, CVE-2017-12146, CVE-2017-16939
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.10.0-42.46
https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1023.26
- ------------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3509-1
December 07, 2017
linux, linux-aws, linux-kvm, linux-raspi2, 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 Linux kernel.
Software Description:
- - linux: Linux kernel
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-kvm: Linux kernel for cloud environments
- - linux-raspi2: Linux kernel for Raspberry Pi 2
- - linux-snapdragon: Linux kernel for Snapdragon processors
Details:
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)
Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB
driver for the Linux kernel. A physically proximate attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16643)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
linux-image-4.4.0-1012-kvm 4.4.0-1012.17
linux-image-4.4.0-103-generic 4.4.0-103.126
linux-image-4.4.0-103-generic-lpae 4.4.0-103.126
linux-image-4.4.0-103-lowlatency 4.4.0-103.126
linux-image-4.4.0-103-powerpc-e500mc 4.4.0-103.126
linux-image-4.4.0-103-powerpc-smp 4.4.0-103.126
linux-image-4.4.0-103-powerpc64-emb 4.4.0-103.126
linux-image-4.4.0-103-powerpc64-smp 4.4.0-103.126
linux-image-4.4.0-1043-aws 4.4.0-1043.52
linux-image-4.4.0-1079-raspi2 4.4.0-1079.87
linux-image-4.4.0-1081-snapdragon 4.4.0-1081.86
linux-image-aws 4.4.0.1043.45
linux-image-generic 4.4.0.103.108
linux-image-generic-lpae 4.4.0.103.108
linux-image-kvm 4.4.0.1012.12
linux-image-lowlatency 4.4.0.103.108
linux-image-powerpc-e500mc 4.4.0.103.108
linux-image-powerpc-smp 4.4.0.103.108
linux-image-powerpc64-emb 4.4.0.103.108
linux-image-powerpc64-smp 4.4.0.103.108
linux-image-raspi2 4.4.0.1079.79
linux-image-snapdragon 4.4.0.1081.73
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:
https://www.ubuntu.com/usn/usn-3509-1
CVE-2017-1000405, CVE-2017-12193, CVE-2017-16643, CVE-2017-16939
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-103.126
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1043.52
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1012.17
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1079.87
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1081.86
- ----------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3509-2
December 07, 2017
linux-lts-xenial, linux-aws vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
USN-3509-1 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.
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)
Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB
driver for the Linux kernel. A physically proximate attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16643)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-4.4.0-1005-aws 4.4.0-1005.5
linux-image-4.4.0-103-generic 4.4.0-103.126~14.04.1
linux-image-4.4.0-103-generic-lpae 4.4.0-103.126~14.04.1
linux-image-4.4.0-103-lowlatency 4.4.0-103.126~14.04.1
linux-image-4.4.0-103-powerpc-e500mc 4.4.0-103.126~14.04.1
linux-image-4.4.0-103-powerpc-smp 4.4.0-103.126~14.04.1
linux-image-4.4.0-103-powerpc64-emb 4.4.0-103.126~14.04.1
linux-image-4.4.0-103-powerpc64-smp 4.4.0-103.126~14.04.1
linux-image-aws 4.4.0.1005.5
linux-image-generic-lpae-lts-xenial 4.4.0.103.86
linux-image-generic-lts-xenial 4.4.0.103.86
linux-image-lowlatency-lts-xenial 4.4.0.103.86
linux-image-powerpc-e500mc-lts-xenial 4.4.0.103.86
linux-image-powerpc-smp-lts-xenial 4.4.0.103.86
linux-image-powerpc64-emb-lts-xenial 4.4.0.103.86
linux-image-powerpc64-smp-lts-xenial 4.4.0.103.86
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:
https://www.ubuntu.com/usn/usn-3509-2
https://www.ubuntu.com/usn/usn-3509-1
CVE-2017-1000405, CVE-2017-12193, CVE-2017-16643, CVE-2017-16939
Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1005.5
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-103.126~14.04.1
- ------------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3510-1
December 08, 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 Linux kernel.
Software Description:
- - linux: Linux kernel
Details:
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-3.13.0-137-generic 3.13.0-137.186
linux-image-3.13.0-137-generic-lpae 3.13.0-137.186
linux-image-3.13.0-137-lowlatency 3.13.0-137.186
linux-image-3.13.0-137-powerpc-e500 3.13.0-137.186
linux-image-3.13.0-137-powerpc-e500mc 3.13.0-137.186
linux-image-3.13.0-137-powerpc-smp 3.13.0-137.186
linux-image-3.13.0-137-powerpc64-emb 3.13.0-137.186
linux-image-3.13.0-137-powerpc64-smp 3.13.0-137.186
linux-image-generic 3.13.0.137.146
linux-image-generic-lpae 3.13.0.137.146
linux-image-lowlatency 3.13.0.137.146
linux-image-powerpc-e500 3.13.0.137.146
linux-image-powerpc-e500mc 3.13.0.137.146
linux-image-powerpc-smp 3.13.0.137.146
linux-image-powerpc64-emb 3.13.0.137.146
linux-image-powerpc64-smp 3.13.0.137.146
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:
https://www.ubuntu.com/usn/usn-3510-1
CVE-2017-1000405, CVE-2017-16939
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-137.186
- ------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3510-2
December 08, 2017
linux-lts-trusty vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- - linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM
Details:
USN-3510-1 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 ESM.
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
linux-image-3.13.0-137-generic 3.13.0-137.186~precise1
linux-image-3.13.0-137-generic-lpae 3.13.0-137.186~precise1
linux-image-generic-lpae-lts-trusty 3.13.0.137.127
linux-image-generic-lts-trusty 3.13.0.137.127
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:
https://www.ubuntu.com/usn/usn-3510-2
https://www.ubuntu.com/usn/usn-3510-1
CVE-2017-1000405, CVE-2017-16939
- ------------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3509-3
December 15, 2017
linux, linux-aws, linux-kvm, linux-raspi2 regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.04 LTS
Summary:
USN-3509-1 introduced a regression in the Linux kernel for Ubuntu 16.04 LTS.
Software Description:
- - linux: Linux kernel
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-kvm: Linux kernel for cloud environments
- - linux-raspi2: Linux kernel for Raspberry Pi 2
Details:
USN-3509-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. Unfortunately, it also introduced a regression that prevented the
Ceph network filesystem from being used. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)
Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB
driver for the Linux kernel. A physically proximate attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16643)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
linux-image-4.4.0-1013-kvm 4.4.0-1013.18
linux-image-4.4.0-104-generic 4.4.0-104.127
linux-image-4.4.0-104-generic-lpae 4.4.0-104.127
linux-image-4.4.0-104-lowlatency 4.4.0-104.127
linux-image-4.4.0-104-powerpc-e500mc 4.4.0-104.127
linux-image-4.4.0-104-powerpc-smp 4.4.0-104.127
linux-image-4.4.0-104-powerpc64-emb 4.4.0-104.127
linux-image-4.4.0-104-powerpc64-smp 4.4.0-104.127
linux-image-4.4.0-1044-aws 4.4.0-1044.53
linux-image-4.4.0-1080-raspi2 4.4.0-1080.88
linux-image-aws 4.4.0.1044.46
linux-image-generic 4.4.0.104.109
linux-image-generic-lpae 4.4.0.104.109
linux-image-kvm 4.4.0.1013.13
linux-image-lowlatency 4.4.0.104.109
linux-image-powerpc-e500mc 4.4.0.104.109
linux-image-powerpc-smp 4.4.0.104.109
linux-image-powerpc64-emb 4.4.0.104.109
linux-image-powerpc64-smp 4.4.0.104.109
linux-image-raspi2 4.4.0.1080.80
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:
https://www.ubuntu.com/usn/usn-3509-3
https://www.ubuntu.com/usn/usn-3509-1
https://launchpad.net/bugs/1737033
Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-104.127
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1044.53
https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1013.18
https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1080.88
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- --------------------------------------------------------------------------------
==========================================================================
Ubuntu Security Notice USN-3509-4
December 15, 2017
linux-lts-xenial, linux-aws regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Summary:
USN-3509-2 introduced a regression in the Linux HWE kernel for Ubuntu 14.04 LTS.
Software Description:
- - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
Details:
USN-3509-2 fixed vulnerabilities in the Linux Hardware Enablement
kernel for Ubuntu 14.04 LTS. Unfortunately, it also introduced a
regression that prevented the Ceph network filesystem from being
used. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Mohamed Ghannam discovered that a use-after-free vulnerability existed in
the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-16939)
It was discovered that the Linux kernel did not properly handle copy-on-
write of transparent huge pages. A local attacker could use this to cause a
denial of service (application crashes) or possibly gain administrative
privileges. (CVE-2017-1000405)
Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array
implementation in the Linux kernel sometimes did not properly handle adding
a new entry. A local attacker could use this to cause a denial of service
(system crash). (CVE-2017-12193)
Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB
driver for the Linux kernel. A physically proximate attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-16643)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-4.4.0-1006-aws 4.4.0-1006.6
linux-image-4.4.0-104-generic 4.4.0-104.127~14.04.1
linux-image-4.4.0-104-generic-lpae 4.4.0-104.127~14.04.1
linux-image-4.4.0-104-lowlatency 4.4.0-104.127~14.04.1
linux-image-4.4.0-104-powerpc-e500mc 4.4.0-104.127~14.04.1
linux-image-4.4.0-104-powerpc-smp 4.4.0-104.127~14.04.1
linux-image-4.4.0-104-powerpc64-emb 4.4.0-104.127~14.04.1
linux-image-4.4.0-104-powerpc64-smp 4.4.0-104.127~14.04.1
linux-image-aws 4.4.0.1006.6
linux-image-generic-lpae-lts-xenial 4.4.0.104.87
linux-image-generic-lts-xenial 4.4.0.104.87
linux-image-lowlatency-lts-xenial 4.4.0.104.87
linux-image-powerpc-e500mc-lts-xenial 4.4.0.104.87
linux-image-powerpc-smp-lts-xenial 4.4.0.104.87
linux-image-powerpc64-emb-lts-xenial 4.4.0.104.87
linux-image-powerpc64-smp-lts-xenial 4.4.0.104.87
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:
https://www.ubuntu.com/usn/usn-3509-4
https://www.ubuntu.com/usn/usn-3509-2
https://www.ubuntu.com/usn/usn-3509-1
https://launchpad.net/bugs/1737033
Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1006.6
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-104.127~14.04.1
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