==========================================================================
Kernel Live Patch Security Notice LSN-0033-1
December 07, 2017

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu:

| Series | Base kernel | Arch | flavors |
|——————+————–+———-+——————|
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency |
| Ubuntu 14.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 14.04 LTS | 4.4.0 | amd64 | lowlatency |

Summary:

Several security issues were fixed in the 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)

It was discovered that a race condition existed in the ALSA subsystem of
the Linux kernel when creating and deleting a port via ioctl(). A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-15265)

Update instructions:

The problem can be corrected by updating your livepatches to the following
versions:

| Kernel | Version | flavors |
|—————–+———-+————————–|
| 4.4.0-101.124 | 33.2 | generic, lowlatency |
| 4.4.0-21.37 | 33.2 | generic, lowlatency |
| 4.4.0-22.39 | 33.2 | generic, lowlatency |
| 4.4.0-22.40 | 33.2 | generic, lowlatency |
| 4.4.0-24.43 | 33.2 | generic, lowlatency |
| 4.4.0-28.47 | 33.2 | generic, lowlatency |
| 4.4.0-31.50 | 33.2 | generic, lowlatency |
| 4.4.0-34.53 | 33.2 | generic, lowlatency |
| 4.4.0-36.55 | 33.2 | generic, lowlatency |
| 4.4.0-38.57 | 33.2 | generic, lowlatency |
| 4.4.0-42.62 | 33.2 | generic, lowlatency |
| 4.4.0-43.63 | 33.2 | generic, lowlatency |
| 4.4.0-45.66 | 33.2 | generic, lowlatency |
| 4.4.0-47.68 | 33.2 | generic, lowlatency |
| 4.4.0-51.72 | 33.2 | generic, lowlatency |
| 4.4.0-53.74 | 33.2 | generic, lowlatency |
| 4.4.0-57.78 | 33.2 | generic, lowlatency |
| 4.4.0-59.80 | 33.2 | generic, lowlatency |
| 4.4.0-62.83 | 33.2 | generic, lowlatency |
| 4.4.0-63.84 | 33.2 | generic, lowlatency |
| 4.4.0-64.85 | 33.2 | generic, lowlatency |
| 4.4.0-66.87 | 33.2 | generic, lowlatency |
| 4.4.0-67.88 | 33.2 | generic, lowlatency |
| 4.4.0-70.91 | 33.2 | generic, lowlatency |
| 4.4.0-71.92 | 33.2 | generic, lowlatency |
| 4.4.0-72.93 | 33.2 | generic, lowlatency |
| 4.4.0-75.96 | 33.2 | generic, lowlatency |
| 4.4.0-77.98 | 33.2 | generic, lowlatency |
| 4.4.0-78.99 | 33.2 | generic, lowlatency |
| 4.4.0-79.100 | 33.2 | generic, lowlatency |
| 4.4.0-81.104 | 33.2 | generic, lowlatency |
| 4.4.0-83.106 | 33.2 | generic, lowlatency |
| 4.4.0-87.110 | 33.2 | generic, lowlatency |
| 4.4.0-89.112 | 33.2 | generic, lowlatency |
| 4.4.0-91.114 | 33.2 | generic, lowlatency |
| 4.4.0-92.115 | 33.2 | generic, lowlatency |
| 4.4.0-93.116 | 33.2 | generic, lowlatency |
| 4.4.0-96.119 | 33.2 | generic, lowlatency |
| 4.4.0-97.120 | 32.2 | generic, lowlatency |
| 4.4.0-97.120 | 33.2 | generic, lowlatency |
| 4.4.0-98.121 | 33.2 | generic, lowlatency |
| lts-4.4.0-101.124_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-21.37_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-22.39_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-22.40_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-24.43_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-28.47_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-31.50_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-34.53_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-36.55_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-38.57_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-42.62_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-45.66_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-47.68_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-51.72_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-53.74_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-57.78_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-59.80_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-62.83_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-63.84_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency |
| lts-4.4.0-64.85_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-66.87_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-67.88_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-70.91_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-71.92_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-72.93_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-75.96_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-78.99_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency |
| lts-4.4.0-79.100_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-81.104_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-83.106_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-87.110_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-89.112_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-91.114_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-92.115_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-93.116_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-96.119_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-97.120_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-98.121_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |

Additionally, you should install an updated kernel with these fixes and
reboot at your convienience.

References:
CVE-2017-1000405, CVE-2017-15265, CVE-2017-16939

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==========================================================================
Ubuntu Security Notice USN-3511-1
December 08, 2017

linux-azure 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-azure: Linux kernel for Microsoft Azure Cloud systems

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 16.04 LTS:
linux-image-4.11.0-1016-azure 4.11.0-1016.16
linux-image-azure 4.11.0.1016.16

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-3511-1
CVE-2017-1000405, CVE-2017-16939

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/4.11.0-1016.16

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==========================================================================
Ubuntu Security Notice USN-3507-2
December 08, 2017

linux-gcp 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems

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)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
linux-image-4.13.0-1002-gcp 4.13.0-1002.5
linux-image-gcp 4.13.0.1002.4
linux-image-gke 4.13.0.1002.4

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-3507-2
https://www.ubuntu.com/usn/usn-3507-1
CVE-2017-1000405, CVE-2017-12193, CVE-2017-15299, CVE-2017-15306,
CVE-2017-15951, CVE-2017-16939

Package Information:
https://launchpad.net/ubuntu/+source/linux-gcp/4.13.0-1002.5

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—