DEBIAN-CVE-2021-3631

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2021-3631
Downstream
DLA-3778-1
Published: 02 Mar 2022, 23:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
medium
25/100
CVSS Score
6.3 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Mar 2022, 23:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected Systems

  • debian•libvirt

    < 7.0.0-3+deb11u3 | < 7.6.0-1 | < 7.6.0-1 | < 7.6.0-1

References (1)