---
title: "CVE-2022-4338\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-2022-4338?format=md
keywords: index, follow
---

# CVE-2022-4338

Publication date 10 January 2023

Last updated 18 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2022-4338?format=md#impact-score)

Toggle side navigation

## Description

An integer underflow in Organization Specific TLV was found in various
versions of OpenvSwitch.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2022-4338?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openvswitch | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Fixed 3.0.3-0ubuntu0.22.10.2 |
| 22.04 LTS jammy | Fixed 2.17.3-0ubuntu0.22.04.2 |
| 20.04 LTS focal | Fixed 2.13.8-0ubuntu1.1 |
| 18.04 LTS bionic | Fixed 2.9.8-0ubuntu0.18.04.4 |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Ignored end of standard support |

---

* [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-2022-4338?format=md#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

same commit as CVE-2022-4337
This issue is fixed in (3.0.3-0ubuntu0.22.10.1) in kinetic but
is not in the -security pocket.

### 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 |
| --- | --- |
| openvswitch | * Upstream:   [7490f28](https://github.com/openvswitch/ovs/commit/7490f281f09a8455c48e19b0cf1b99ab758ee4f4) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4338)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-4338)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-4338)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-4338)

### Related Ubuntu Security Notices (USN)

+ [USN-5890-1](https://usn.ubuntu.com/USN-5890-1)
+ Open vSwitch vulnerabilities
+ 27 February 2023

### Other references

* <https://www.openwall.com/lists/oss-security/2022/12/20/2>
* <https://mail.openvswitch.org/pipermail/ovs-dev/2022-December/400596.html>
* <https://www.cve.org/CVERecord?id=CVE-2022-4338>