---
id: CVE-2016-2140
aliases:
  - GHSA-49jv-37hm-6gfp
  - PYSEC-2026-864
title: OpenStack Nova host data access through resize/migration
summary: OpenStack Nova host data access through resize/migration
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
vendor: nova
product: nova
ecosystem: pip
affected:
  - 'nova >= 12.0.0, < 12.0.3'
patched:
  - nova 12.0.3
published: '2022-05-14'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-49jv-37hm-6gfp'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2016-2140'
  - url: >-
      https://github.com/openstack/nova/commit/0b194187db9da28225cb5e62be3b45aff5a1c793
  - url: >-
      https://github.com/openstack/nova/commit/116b1210ab772c55d1ed1f715687d83877c92701
  - url: >-
      https://github.com/openstack/nova/commit/f302bf04ab5dda89cf8ceaeed309006da90c0666
  - url: 'https://access.redhat.com/errata/RHSA-2016:0363'
  - url: 'https://access.redhat.com/errata/RHSA-2016:0364'
  - url: 'https://access.redhat.com/errata/RHSA-2016:0365'
  - url: 'https://access.redhat.com/errata/RHSA-2016:0366'
  - url: 'https://access.redhat.com/security/cve/CVE-2016-2140'
  - url: 'https://bugs.launchpad.net/nova/+bug/1548450'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1313454'
  - url: 'https://github.com/openstack/nova'
  - url: 'https://security.openstack.org/ossa/OSSA-2016-007.html'
  - url: 'http://seclists.org/oss-sec/2016/q1/563'
  - url: 'http://www.openwall.com/lists/oss-security/2016/03/08/6'
  - url: 'http://www.securityfocus.com/bid/84277'
tags:
  - osv
  - pip
epss: 0.01991
epssPercentile: 0.79537
ingestedAt: '2026-07-08T18:25:45.446Z'
---

## Overview

The libvirt driver in OpenStack Compute (Nova) before 2015.1.4 (kilo) and 12.0.x before 12.0.3 (liberty), when using raw storage and use_cow_images is set to false, allows remote authenticated users to read arbitrary files via a crafted qcow2 header in an ephemeral or root disk.

## Affected packages

- `nova >= 12.0.0, < 12.0.3`

## Remediation

Upgrade to a patched release:

- `nova 12.0.3`