---
title: "CVE-2014-8594\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-2014-8594?format=md
keywords: index, follow
---

# CVE-2014-8594

Publication date 19 November 2014

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The do\_mmu\_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does
not properly restrict updates to only PV page tables, which allows remote
PV guests to cause a denial of service (NULL pointer dereference) by
leveraging hardware emulation services for HVM guests using Hardware
Assisted Paging (HAP).

[Read the notes from the security team](https://ubuntu.com/security/CVE-2014-8594?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| xen | 14.10 utopic | Fixed 4.4.1-0ubuntu0.14.10.2 |
| 14.04 LTS trusty | Fixed 4.4.1-0ubuntu0.14.04.2 |
| 12.04 LTS precise | Fixed 4.1.6.1-0ubuntu0.12.04.4 |
| 10.04 LTS lucid | Not in release |
| xen-3.3 | 14.10 utopic | Not in release |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | 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)

4.0+

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8594)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-8594)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-8594)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2014-8594)

### Other references

* <http://xenbits.xen.org/xsa/advisory-109.html>
* <https://www.cve.org/CVERecord?id=CVE-2014-8594>