Executive Summary

Title Linux kernel (AWS) vulnerability
Name USN-4096-1 First vendor Publication 2019-08-13
Vendor Ubuntu Last vendor Modification 2019-08-13
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores


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

- Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS


The system could be made to expose sensitive information.

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


Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information (kernel memory).

Update instructions:

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

Ubuntu 19.04:
linux-image-5.0.0-1012-aws 5.0.0-1012.13

Ubuntu 18.04 LTS:
linux-image-4.15.0-1045-aws 4.15.0-1045.47

Ubuntu 16.04 LTS:
linux-image-4.15.0-1045-aws 4.15.0-1045.47~16.04.1

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.


Package Information:

Original Source

Url : http://www.ubuntu.com/usn/USN-4096-1

Alert History

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Date Informations
2019-08-13 21:19:10
  • First insertion