CVE-2021-3631

At a glance

Severity: Not available
EPSS: EPSS 0.49 % · percentile 42 (2026-10-27)
State: PUBLISHED
Published: 2022-03-02
Updated: 2024-11-19
Assigner: redhat
NVD status: Modified

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.3	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N	NVD · nvd@nist.gov (Primary)
CVSS 2.0	LOW 3.3	AV:L/AC:M/Au:N/C:P/I:P/A:N	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-732

European references

ENISA EUVD · EUVD-2021-26933
GCVE · GCVE-0-2021-3631

CERT-FR advisories

CERTFR-2024-AVI-0380 — Multiples vulnérabilités dans les produits NetApp · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* < 7.5.0
cpe:2.3:a:redhat:openshift_container_platform:4.8:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

Affected products

Product	Versions
libvirt	affected Fixed-In - libvirt v7.5.0

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD