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Ubuntu 14.04 ESM Advisory USN-4303-2 Urgent: Kernel Data Leakage Alert

ubuntu
Calendar Grey March 16, 2020
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
The system could be made to expose sensitive information.

Summary

The system could be made to expose sensitive information.

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-4303-1 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.

Paulo Bonzini discovered that the KVM hypervisor implementation in the

Linux kernel could improperly let a nested (level 2) guest access the

resources of a parent (level 1) guest in certain situations. An attacker

could use this to expose sensitive information.

Topics%20covered

Topics Covered

security advisory system update sensitive information linux kernel ubuntu 14.04 aws security

Update Instructions

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

Ubuntu 14.04 ESM:
  linux-image-4.4.0-1064-aws      4.4.0-1064.68
  linux-image-4.4.0-176-generic   4.4.0-176.206~14.04.1
  linux-image-4.4.0-176-generic-lpae  4.4.0-176.206~14.04.1
  linux-image-4.4.0-176-lowlatency  4.4.0-176.206~14.04.1
  linux-image-4.4.0-176-powerpc-e500mc  4.4.0-176.206~14.04.1
  linux-image-4.4.0-176-powerpc-smp  4.4.0-176.206~14.04.1
  linux-image-4.4.0-176-powerpc64-emb  4.4.0-176.206~14.04.1
  linux-image-4.4.0-176-powerpc64-smp  4.4.0-176.206~14.04.1
  linux-image-aws                 4.4.0.1064.65
  linux-image-generic-lpae-lts-xenial  4.4.0.176.155
  linux-image-generic-lts-xenial  4.4.0.176.155
  linux-image-lowlatency-lts-xenial  4.4.0.176.155
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.176.155
  linux-image-powerpc-smp-lts-xenial  4.4.0.176.155
  linux-image-powerpc64-emb-lts-xenial  4.4.0.176.155
  linux-image-powerpc64-smp-lts-xenial  4.4.0.176.155
  linux-image-virtual-lts-xenial  4.4.0.176.155

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-4303-2

https://ubuntu.com/security/notices/USN-4303-1

CVE-2020-2732

Severity
critical
Lowest
Low
Medium
High
Critical

March 17, 2020

Topics%20covered

Topics Covered

security advisory system update sensitive information linux kernel ubuntu 14.04 aws security

Package Information

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