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Ubuntu 14.04 LTS: USN-3364-2 Moderate: Linux Kernel Security Issues

ubuntu
Calendar Grey July 24, 2017
Dist Ubuntu Esm H88
Security issues in the Linux kernel for Ubuntu 14.04 LTS are addressed with critical updates and guidance.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3364-1 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 Linux kernel did not properly initialize a Wake-

on-Lan data structure. A local attacker could use this to expose sensitive

information (kernel memory). (CVE-2014-9900)

It was discovered that the Linux kernel did not properly restrict access to

/proc/iomem. A local attacker could use this to expose sensitive

information. (CVE-2015-8944)

Alexander Potapenko discovered a race condition in the Advanced Linux Sound

Architecture (ALSA) subsystem in the Linux kernel. A local attacker could

use this to expose sensitive information (kernel memory).

(CVE-2017-1000380)

Li Qiang discovered ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel fix local attack ubuntu sensitive information linux hwe

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-87-generic    4.4.0-87.110~14.04.1
  linux-image-4.4.0-87-generic-lpae  4.4.0-87.110~14.04.1
  linux-image-4.4.0-87-lowlatency  4.4.0-87.110~14.04.1
  linux-image-4.4.0-87-powerpc-e500mc  4.4.0-87.110~14.04.1
  linux-image-4.4.0-87-powerpc-smp  4.4.0-87.110~14.04.1
  linux-image-4.4.0-87-powerpc64-emb  4.4.0-87.110~14.04.1
  linux-image-4.4.0-87-powerpc64-smp  4.4.0-87.110~14.04.1
  linux-image-generic-lpae-lts-xenial  4.4.0.87.72
  linux-image-generic-lts-xenial  4.4.0.87.72
  linux-image-lowlatency-lts-xenial  4.4.0.87.72
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.87.72
  linux-image-powerpc-smp-lts-xenial  4.4.0.87.72
  linux-image-powerpc64-emb-lts-xenial  4.4.0.87.72
  linux-image-powerpc64-smp-lts-xenial  4.4.0.87.72

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-3364-2

https://ubuntu.com/security/notices/USN-3364-1

CVE-2014-9900, CVE-2015-8944, CVE-2017-1000380, CVE-2017-7346,

CVE-2017-9150, CVE-2017-9605

Severity
important
Lowest
Low
Medium
High
Critical

July 24, 2017

Topics%20covered

Topics Covered

security advisory denial of service kernel fix local attack ubuntu sensitive information linux hwe

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-87.110~14.04.1

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