---
title: "CVE-2019-9836\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-2019-9836?format=md
keywords: index, follow
---

# CVE-2019-9836

Publication date 25 June 2019

Last updated 25 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2019-9836?format=md#impact-score)

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## Description

Secure Encrypted Virtualization (SEV) on Advanced Micro Devices (AMD)
Platform Security Processor (PSP; aka AMD Secure Processor or AMD-SP) 0.17
build 11 and earlier has an insecure cryptographic implementation.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| linux-firmware | 19.10 eoan | Not affected |
| 19.04 disco | Ignored end of life |
| 18.10 cosmic | Ignored end of life |
| 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-2019-9836?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 |
| --- | --- |
| linux-firmware | * Upstream:   [?id=c43](https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=c436aaf67d93aecfd6ce9f3024efc796a56f8203) |

## 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 | Low |
  | Integrity impact | None |
  | Availability impact | None |
* 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:L/I:N/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9836)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-9836)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-9836)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-9836)

### Other references

* <http://packetstormsecurity.com/files/153436/AMD-Secure-Encrypted-Virtualization-SEV-Key-Recovery.html>
* <https://seclists.org/fulldisclosure/2019/Jun/46>
* <https://www.amd.com/en/corporate/product-security>
* <https://www.cve.org/CVERecord?id=CVE-2019-9836>