---
title: 'USN-5437-1: libXfixes vulnerability | Ubuntu security notices'
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/notices/USN-5437-1
---

1. [Ubuntu Security Notices](https://ubuntu.com/security/notices)
2. USN-5437-1

---

# USN-5437-1: libXfixes vulnerability

Publication date

23 May 2022

Overview

libXfixes could be made to crash or run programs if it received specially
crafted input.

Releases

[16.04 LTS](https://ubuntu.com/security/notices?release=xenial)

---

Open side navigation

## Packages

* [libxfixes](https://ubuntu.com/security/cves?package=libxfixes) - X11 miscellaneous fixes extension library

## Details

Tobias Stoeckmann discovered that libXfixes incorrectly handled certain
inputs. An attacker could possibly use this issue to cause a denial
of service, or possibly execute arbitrary code.

## Update instructions

In general, a standard system update will make all the necessary changes.

[Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security)

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

| Ubuntu Release | Package Version |
| --- | --- |
| 16.04 LTS xenial | [libxfixes3](https://launchpad.net/ubuntu/+source/libxfixes) –  1:5.0.1-2ubuntu0.1~esm1   Ubuntu Pro | | |

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## References

* [CVE-2016-7944](https://ubuntu.com/security/CVE-2016-7944)