Alerts This Week
Warning Icon 1 485
Alerts This Week
Warning Icon 1 485

Ubuntu 14.04 ESM USN-4186-2 Critical: Linux Kernel Multiple Issues

ubuntu
Calendar Grey November 12, 2019
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
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-4186-1 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 ESM.

Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo,

Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz

Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel

processors using Transactional Synchronization Extensions (TSX) could

expose memory contents previously stored in microarchitectural buffers to a

malicious process that is executing on the same CPU core. A local attacker

could use this to expose sensitive information. (CVE-2019-11135)

It was discovered tha...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information disclosure linux-lts-xenial linux-aws

Update Instructions

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

Ubuntu 14.04 ESM:
  linux-image-4.4.0-1058-aws      4.4.0-1058.62
  linux-image-4.4.0-168-generic   4.4.0-168.197~14.04.1
  linux-image-4.4.0-168-generic-lpae  4.4.0-168.197~14.04.1
  linux-image-4.4.0-168-lowlatency  4.4.0-168.197~14.04.1
  linux-image-4.4.0-168-powerpc-e500mc  4.4.0-168.197~14.04.1
  linux-image-4.4.0-168-powerpc-smp  4.4.0-168.197~14.04.1
  linux-image-4.4.0-168-powerpc64-emb  4.4.0-168.197~14.04.1
  linux-image-4.4.0-168-powerpc64-smp  4.4.0-168.197~14.04.1
  linux-image-aws                 4.4.0.1058.59
  linux-image-generic-lpae-lts-xenial  4.4.0.168.147
  linux-image-generic-lts-xenial  4.4.0.168.147
  linux-image-lowlatency-lts-xenial  4.4.0.168.147
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.168.147
  linux-image-powerpc-smp-lts-xenial  4.4.0.168.147
  linux-image-powerpc64-emb-lts-xenial  4.4.0.168.147
  linux-image-powerpc64-smp-lts-xenial  4.4.0.168.147
  linux-image-virtual-lts-xenial  4.4.0.168.147

Please note that mitigating the TSX (CVE-2019-11135) and i915
(CVE-2019-0154) issues requires corresponding microcode and graphics
firmware updates respectively.

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-4186-2

https://ubuntu.com/security/notices/USN-4186-1

CVE-2018-12207, CVE-2019-0154, CVE-2019-0155, CVE-2019-11135,

CVE-2019-15098, CVE-2019-17052, CVE-2019-17053, CVE-2019-17054,

CVE-2019-17055, CVE-2019-17056, CVE-2019-17666,

https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/TAA_MCEPSC_i915

Severity
critical
Lowest
Low
Medium
High
Critical

November 13, 2019

Topics%20covered

Topics Covered

security advisory denial of service information disclosure linux-lts-xenial linux-aws

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here