---
title: "CVE-2022-3116\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-2022-3116?format=md
keywords: index, follow
---

# CVE-2022-3116

Publication date 7 October 2022

Last updated 11 July 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2022-3116?format=md#impact-score)

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## Description

The Heimdal Software Kerberos 5 implementation is vulnerable to a null
pointer dereferance. An attacker with network access to an application that
depends on the vulnerable code path can cause the application to crash.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2022-3116?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| heimdal | 26.04 LTS resolute | Vulnerable |
| 25.10 questing | Ignored end of life, was needed |
| 25.04 plucky | Ignored end of life, was needed |
| 24.10 oracular | Ignored end of life, was needed |
| 24.04 LTS noble | Vulnerable |
| 23.10 mantic | Ignored end of life, was needed |
| 23.04 lunar | Ignored end of life, was needed |
| 22.10 kinetic | Ignored end of life, was needed |
| 22.04 LTS jammy | Vulnerable |
| 20.04 LTS focal | Fixed 7.7.0+dfsg-1ubuntu1.1 |
| 18.04 LTS bionic | Fixed 7.5.0+dfsg-1ubuntu0.1 |
| 16.04 LTS xenial | Fixed 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 1.6~git20131207+dfsg-1ubuntu1.2+esm1  Ubuntu Pro |
| samba | 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 | Not affected |
| 22.04 LTS jammy | Not affected |
| 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)
* [Patch details](https://ubuntu.com/security/CVE-2022-3116?format=md#patch-details)

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## Notes

---

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

VU#730793
believed to to be fixed by 7a19658c1 ("spnego: Fix NULL
deref")
believed to be introduced by b53c90da0 ("Make error reporting
somewhat more correct for SPNEGO.")
samba contains an embedded code copy of heimdal, but does not
use heimdal for SPNEGO

### 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 |
| --- | --- |
| heimdal | * Upstream:   [7a19658](https://github.com/heimdal/heimdal/commit/7a19658c1f4fc4adf85bb7bea96caae5ba57b33e) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* 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 | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3116)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-3116)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-3116)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-3116)

### Related Ubuntu Security Notices (USN)

+ [USN-5675-1](https://usn.ubuntu.com/USN-5675-1)
+ Heimdal vulnerabilities
+ 13 October 2022

### Other references

* <https://kb.cert.org/vuls/id/730793>
* <https://www.cve.org/CVERecord?id=CVE-2022-3116>