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Status published
Medium
CVE-2021-3631
A flaw was found in libvirt while it generates SELinux...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1977726
- https://gitlab.com/libvirt/libvirt/-/issues/153
- https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2
- https://access.redhat.com/errata/RHSA-2021:3631
- https://security.netapp.com/advisory/ntap-20220331-0010/
- https://security.gentoo.org/glsa/202210-06
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
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Affected Vendor
Affected Software
libvirt
Vulnerable Versions:
Fixed-In - libvirt v7.5.0
Timeline
Official Publish:
March 2nd, 2022
Last Modified:
November 19th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N