---
title: "CVE-2022-0396\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-2022-0396?format=md
keywords: index, follow
---

# CVE-2022-0396

Publication date 16 March 2022

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2022-0396?format=md#impact-score)

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## Description

BIND 9.16.11 -> 9.16.26, 9.17.0 -> 9.18.0 and versions 9.16.11-S1 ->
9.16.26-S1 of the BIND Supported Preview Edition. Specifically crafted TCP
streams can cause connections to BIND to remain in CLOSE\_WAIT status for an
indefinite period of time, even after the client has terminated the
connection.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2022-0396?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| bind9 | 22.04 LTS jammy | Fixed 1:9.18.0-2ubuntu3 |
| 21.10 impish | Fixed 1:9.16.15-1ubuntu1.2 |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

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

only affects 9.16.11 and higher

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0396)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-0396)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-0396)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-0396)

### Related Ubuntu Security Notices (USN)

+ [USN-5332-1](https://usn.ubuntu.com/USN-5332-1)
+ Bind vulnerabilities
+ 17 March 2022

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2022-0396>