Ubuntu Security Notices
USN-4253-1

USN-4253-1: Linux kernel vulnerability

Publication date

28 January 2020

Overview

The Linux kernel could be made to expose sensitive information.

Releases

19.10

Packages

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

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release	Package Version
19.10 eoan	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-generic – 5.3.0.29.33
	linux-image-5.3.0-29-snapdragon – 5.3.0-29.31
	linux-image-5.3.0-29-lowlatency – 5.3.0-29.31
	linux-image-virtual – 5.3.0.29.33
	linux-image-generic-lpae – 5.3.0.29.33
	linux-image-aws – 5.3.0.1010.12
	linux-image-lowlatency – 5.3.0.29.33
	linux-image-5.3.0-29-generic-lpae – 5.3.0-29.31

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References

CVE-2019-14615

CVE-2019-14615

Have additional questions?

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