CVE-2021-3631

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.

References

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

https://gitlab.com/libvirt/libvirt/-/issues/153

https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2

https://bugzilla.redhat.com/show_bug.cgi?id=1977726

https://access.redhat.com/errata/RHSA-2021:3631

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3