VULNERABILITY INTELLIGENCE

CVE-2021-3631

CVSS score6.3 MEDIUM
EPSS probability0.49%
CISA KEVNot currently listed
Published2022-03-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Description

A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.

Weakness classification

  • secalert@redhat.com: CWE-732
  • nvd@nist.gov: CWE-732

Primary references