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Ubuntu 14.04 LTS USN-3631-2 Critical: Linux Kernel Security Issues

ubuntu
Calendar Grey April 24, 2018
Scroller Ubuntu
Multiple updates issued addressing different vulnerabilities within the Linux kernel for Ubuntu 14.04 LTS and its associated platforms.
Several security issues were fixed in the Linux kernel.

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-3631-1 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 a buffer overread vulnerability existed in the

keyring subsystem of the Linux kernel. A local attacker could possibly use

this to expose sensitive information (kernel memory). (CVE-2017-13305)

It was discovered that the DM04/QQBOX USB driver in the Linux kernel did

not properly handle device attachment and warm-start. A physically

proximate attacker could use this to cause a denial of service (system

crash) or possibly execute arbitrary code. (CVE-2017-16538)

Luo Quan and Wei Yang discovered that a ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu kernel fix information disclosure system crash buffer overread

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-1017-aws      4.4.0-1017.17
  linux-image-4.4.0-121-generic   4.4.0-121.145~14.04.1
  linux-image-4.4.0-121-generic-lpae  4.4.0-121.145~14.04.1
  linux-image-4.4.0-121-lowlatency  4.4.0-121.145~14.04.1
  linux-image-4.4.0-121-powerpc-e500mc  4.4.0-121.145~14.04.1
  linux-image-4.4.0-121-powerpc-smp  4.4.0-121.145~14.04.1
  linux-image-4.4.0-121-powerpc64-emb  4.4.0-121.145~14.04.1
  linux-image-4.4.0-121-powerpc64-smp  4.4.0-121.145~14.04.1
  linux-image-aws                 4.4.0.1017.17
  linux-image-generic-lpae-lts-xenial  4.4.0.121.102
  linux-image-generic-lts-xenial  4.4.0.121.102
  linux-image-lowlatency-lts-xenial  4.4.0.121.102
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.121.102
  linux-image-powerpc-smp-lts-xenial  4.4.0.121.102
  linux-image-powerpc64-emb-lts-xenial  4.4.0.121.102
  linux-image-powerpc64-smp-lts-xenial  4.4.0.121.102

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-3631-2

https://ubuntu.com/security/notices/USN-3631-1

CVE-2017-13305, CVE-2017-16538, CVE-2018-1000004, CVE-2018-5750,

CVE-2018-7566

Severity
critical
Lowest
Low
Medium
High
Critical

April 24, 2018

Topics%20covered

Topics Covered

security advisory Ubuntu kernel fix information disclosure system crash buffer overread

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1017.17
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-121.145~14.04.1

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