ESB-2017.3153 - [Ubuntu] kernel: Multiple vulnerabilities 2017-12-08

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.3153
                       Linux kernel vulnerabilities
                              8 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-2017-15951
                   CVE-2017-15306 CVE-2017-15299 CVE-2017-15265
                   CVE-2017-12193 CVE-2017-12146 

Reference:         ESB-2017.3143
                   ESB-2017.3129
                   ESB-2017.3104

Original Bulletin: 
   https://lists.ubuntu.com/archives/ubuntu-security-announce/
   http://www.ubuntu.com/usn/usn-3511-1
   http://www.ubuntu.com/usn/usn-3507-2
   http://www.ubuntu.com/usn/usn-3508-2

Comment: This bulletin contains four (4) Ubuntu security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

==========================================================================
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

- -----------------------------------------------------------------------------

==========================================================================
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


- -------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3508-2
December 07, 2017

linux-hwe 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-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3508-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 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)

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 16.04 LTS:
  linux-image-4.10.0-42-generic   4.10.0-42.46~16.04.1
  linux-image-4.10.0-42-generic-lpae  4.10.0-42.46~16.04.1
  linux-image-4.10.0-42-lowlatency  4.10.0-42.46~16.04.1
  linux-image-generic-hwe-16.04   4.10.0.42.44
  linux-image-generic-lpae-hwe-16.04  4.10.0.42.44
  linux-image-lowlatency-hwe-16.04  4.10.0.42.44

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-3508-2
  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-hwe/4.10.0-42.46~16.04.1

- -----------------------------------------------------------------------------

==========================================================================
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

- --------------------------END INCLUDED TEXT--------------------

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