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==========================================================================
Ubuntu Security Notice USN-4253-1
January 28, 2020

linux, linux-aws vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10

Summary:

The Linux kernel could be made to expose sensitive information.

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

Details:

It was discovered that the Linux kernel did not properly clear data
structures on context switches for certain Intel graphics processors. A
local attacker could use this to expose sensitive information.

Update instructions:

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

Ubuntu 19.10:
  linux-image-5.3.0-1010-aws      5.3.0-1010.11
  linux-image-5.3.0-29-generic    5.3.0-29.31
  linux-image-5.3.0-29-generic-lpae  5.3.0-29.31
  linux-image-5.3.0-29-lowlatency  5.3.0-29.31
  linux-image-5.3.0-29-snapdragon  5.3.0-29.31
  linux-image-aws                 5.3.0.1010.12
  linux-image-generic             5.3.0.29.33
  linux-image-generic-lpae        5.3.0.29.33
  linux-image-lowlatency          5.3.0.29.33
  linux-image-virtual             5.3.0.29.33

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://usn.ubuntu.com/4253-1
  CVE-2019-14615

Package Information:
  https://launchpad.net/ubuntu/+source/linux/5.3.0-29.31
  https://launchpad.net/ubuntu/+source/linux-aws/5.3.0-1010.11


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