---
title: "CVE-2018-1049\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-2018-1049?format=md
keywords: index, follow
---

# CVE-2018-1049

Publication date 17 January 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.9 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2018-1049?format=md#impact-score)

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## Description

In systemd prior to 234 a race condition exists between .mount and
.automount units such that automount requests from kernel may not be
serviced by systemd resulting in kernel holding the mountpoint and any
processes that try to use said mount will hang. A race condition like this
may lead to denial of service, until mount points are unmounted.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| systemd | 17.10 artful | Not affected |
| 16.04 LTS xenial | Fixed 229-4ubuntu21.1 |
| 14.04 LTS trusty | Fixed 204-5ubuntu20.26 |

---

* [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-2018-1049?format=md#patch-details)

### 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 |
| --- | --- |
| systemd | * Upstream:   [e7d54bf](https://github.com/systemd/systemd/commit/e7d54bf58789545a9eb0b3964233defa0b007318) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.9 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.9 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1049)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-1049)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-1049)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-1049)

### Related Ubuntu Security Notices (USN)

+ [USN-3558-1](https://usn.ubuntu.com/USN-3558-1)
+ systemd vulnerabilities
+ 5 February 2018

### Other references

* <https://github.com/systemd/systemd/pull/5916>
* <https://www.cve.org/CVERecord?id=CVE-2018-1049>