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Ubuntu 18.04 LTS: USN-4253-2 Moderate: Linux Kernel Update for HWE

ubuntu
Calendar Grey January 28, 2020
Dist Ubuntu Esm H88
The core system of Ubuntu 18.04 LTS contains vulnerabilities that reveal confidential data, creating risks for security breaches. Upgrade immediately!
he Linux kernel could be made to expose sensitive information.

Summary

he Linux kernel could be made to expose sensitive information.

Software Description:

- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-4253-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.10.

This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 19.10 for Ubuntu

18.04 LTS.

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.

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu local attack sensitive information linux-hwe

Update Instructions

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

Ubuntu 18.04 LTS:
  linux-image-5.3.0-28-generic    5.3.0-28.30~18.04.1
  linux-image-5.3.0-28-generic-lpae  5.3.0-28.30~18.04.1
  linux-image-5.3.0-28-lowlatency  5.3.0-28.30~18.04.1
  linux-image-generic-hwe-18.04   5.3.0.28.96
  linux-image-generic-lpae-hwe-18.04  5.3.0.28.96
  linux-image-lowlatency-hwe-18.04  5.3.0.28.96
  linux-image-snapdragon-hwe-18.04  5.3.0.28.96
  linux-image-virtual-hwe-18.04   5.3.0.28.96

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-4253-2

https://ubuntu.com/security/notices/USN-4253-1

CVE-2019-14615

January 28, 2020

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu local attack sensitive information linux-hwe

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-28.30~18.04.1

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