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=========================================================================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://ubuntu.com/security/notices/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 3509-1: Linux kernel vulnerabilities

December 8, 2017
Several security issues were fixed in the Linux kernel.

Summary

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://ubuntu.com/security/notices/USN-3509-1

CVE-2017-1000405, CVE-2017-12193, CVE-2017-16643, CVE-2017-16939

Severity
December 07, 2017

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

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