Double Free Affecting libvirt package, versions [,6.8.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (16th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Double Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-UNMANAGED-LIBVIRT-2317471
  • published14 Dec 2021
  • disclosed6 Oct 2020
  • creditUnknown

Introduced: 6 Oct 2020

CVE-2020-25637  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade libvirt to version 6.8.0 or higher.

Overview

Affected versions of this package are vulnerable to Double Free. A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Scores

version 3.1