---
title: "CVE-2022-4144\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-2022-4144?format=md
keywords: index, follow
---

# CVE-2022-4144

Publication date 29 November 2022

Last updated 25 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**6.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2022-4144?format=md#impact-score)

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## Description

An out-of-bounds read flaw was found in the QXL display device emulation in
QEMU. The qxl\_phys2virt() function does not check the size of the structure
pointed to by the guest physical address, potentially reading past the end
of the bar space into adjacent pages. A malicious guest user could use this
flaw to crash the QEMU process on the host causing a denial of service
condition.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| qemu | 23.04 lunar | Not affected |
| 22.10 kinetic | Fixed 1:7.0+dfsg-7ubuntu2.6 |
| 22.04 LTS jammy | Fixed 1:6.2+dfsg-2ubuntu6.11 |
| 20.04 LTS focal | Fixed 1:4.2-3ubuntu6.27 |
| 18.04 LTS bionic | Fixed 1:2.11+dfsg-1ubuntu7.42+esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 1:2.5+dfsg-5ubuntu10.51+esm2  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 2.0.0+dfsg-2ubuntu1.47+esm3  Ubuntu Pro |

---

* [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-2022-4144?format=md#patch-details)

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### 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 |
| --- | --- |
| qemu | * Upstream:   [61c34fc](https://gitlab.com/qemu-project/qemu/-/commit/61c34fc1) * Upstream:   [b1901de](https://gitlab.com/qemu-project/qemu/-/commit/b1901de8) * Upstream:   [8efec0e](https://gitlab.com/qemu-project/qemu/-/commit/8efec0ef) * Upstream:   [6dbbf05](https://gitlab.com/qemu-project/qemu/-/commit/6dbbf055) * Upstream:   [86fdb05](https://gitlab.com/qemu-project/qemu/-/commit/86fdb058) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4144)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-4144)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-4144)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-4144)

### Related Ubuntu Security Notices (USN)

+ [USN-6167-1](https://usn.ubuntu.com/USN-6167-1)
+ QEMU vulnerabilities
+ 19 June 2023

### Other references

* <https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html>
* <https://www.cve.org/CVERecord?id=CVE-2022-4144>