CVE-2021-3631
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.5%
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
n/a · libvirtReferences
https://access.redhat.com/errata/RHSA-2021:3631https://bugzilla.redhat.com/show_bug.cgi?id=1977726https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2https://gitlab.com/libvirt/libvirt/-/issues/153https://lists.debian.org/debian-lts-announce/2024/04/msg00000.htmlhttps://security.gentoo.org/glsa/202210-06https://security.netapp.com/advisory/ntap-20220331-0010/