Improper Locking Affecting libvirt package, versions <6.0.0-0ubuntu8.16


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.24% (15th percentile)

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  • Snyk IDSNYK-UBUNTU2004-LIBVIRT-2326244
  • published25 Dec 2021
  • disclosed25 Mar 2022

Introduced: 25 Dec 2021

CVE-2021-4147  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 libvirt to version 6.0.0-0ubuntu8.16 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libvirt package and not the libvirt package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.

CVSS Base Scores

version 3.1