---
title: "CVE-2016-5384\n    | Ubuntu"
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/CVE-2016-5384?format=md
keywords: index, follow
---

# CVE-2016-5384

Publication date 8 August 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2016-5384?format=md#impact-score)

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## Description

fontconfig before 2.12.1 does not validate offsets, which allows local
users to trigger arbitrary free calls and consequently conduct double free
attacks and execute arbitrary code via a crafted cache file.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| fontconfig | 17.04 zesty | Fixed 2.11.94-0ubuntu2 |
| 16.10 yakkety | Fixed 2.11.94-0ubuntu2 |
| 16.04 LTS xenial | Fixed 2.11.94-0ubuntu1.1 |
| 14.04 LTS trusty | Fixed 2.11.0-0ubuntu4.2 |
| 12.04 LTS precise | Fixed 2.8.0-3ubuntu9.2 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2016-5384?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| fontconfig | * Upstream:   [?id=7a4](https://cgit.freedesktop.org/fontconfig/commit/?id=7a4a5bd7897d216f0794ca9dbce0a4a5c9d14940) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.8 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.8 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5384)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-5384)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-5384)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-5384)

### Related Ubuntu Security Notices (USN)

+ [USN-3063-1](https://usn.ubuntu.com/USN-3063-1)
+ Fontconfig vulnerability
+ 17 August 2016

### Other references

* <https://lists.freedesktop.org/archives/fontconfig/2016-August/005792.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-5384>