---
title: "CVE-2022-45873\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-2022-45873?format=md
keywords: index, follow
---

# CVE-2022-45873

Publication date 23 November 2022

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2022-45873?format=md#impact-score)

Toggle side navigation

## Description

systemd 250 and 251 allows local users to achieve a systemd-coredump
deadlock by triggering a crash that has a long backtrace. This occurs in
parse\_elf\_object in shared/elf-util.c. The exploitation methodology is to
crash a binary calling the same function recursively, and put it in a
deeply nested directory to make its backtrace large enough to cause the
deadlock. This must be done 16 times when MaxConnections=16 is set for the
systemd/units/systemd-coredump.socket file.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| systemd | 22.10 kinetic | Fixed 251.4-1ubuntu7.1 |
| 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)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45873)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-45873)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2022-45873)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2022-45873)

### Related Ubuntu Security Notices (USN)

+ [USN-5928-1](https://usn.ubuntu.com/USN-5928-1)
+ systemd vulnerabilities
+ 7 March 2023

### Other references

* <https://github.com/systemd/systemd/pull/25055#issuecomment-1313733553>
* <https://github.com/systemd/systemd/commit/076b807be472630692c5348c60d0c2b7b28ad437>
* <https://www.cve.org/CVERecord?id=CVE-2022-45873>