USN-4006-2: Linux kernel (HWE) vulnerability

Published Jun 4, 2019

Updated

USN-4006-1 fixed a vulnerability in the Linux kernel for Ubuntu 18.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS. Federico Manuel Bento discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid a.out binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid a.out binary. As a hardening measure, this update disables a.out support.

Affected Software

1 affected component

Canonical Linux kernel (HWE)

Event History

May 10, 2025

Advisory Published

via Ubuntu·04:08 AM

Data Sourced

via Ubuntu·04:08 AM

DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2019-11191

Frequently Asked Questions

What is the vulnerability ID for this Linux kernel vulnerability?

The vulnerability ID for this Linux kernel vulnerability is USN-4006-2.

What version of Ubuntu is affected by this vulnerability?

Ubuntu 18.04 LTS is affected by this vulnerability.

How can I fix this vulnerability on Ubuntu 18.04 LTS?

To fix this vulnerability on Ubuntu 18.04 LTS, update the Linux kernel to version 4.18.0-21.22~18.04.1 or higher.

Who discovered this vulnerability?

Federico Manuel Bento discovered this vulnerability.

Where can I find more information about this vulnerability?

You can find more information about this vulnerability on the Ubuntu Security Notices website.