CVE-2021-3631

NameCVE-2021-3631
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs990709

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libvirt (PTS)buster5.0.0-4+deb10u1vulnerable
bullseye7.0.0-3vulnerable
bookworm, sid9.0.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libvirtsource(unstable)7.6.0-1990709

Notes

[bullseye] - libvirt <no-dsa> (Minor issue)
[buster] - libvirt <no-dsa> (Minor issue)
[stretch] - libvirt <no-dsa> (Minor issue)
https://gitlab.com/libvirt/libvirt/-/issues/153
Fixed by: https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2 (v7.5.0)

Search for package or bug name: Reporting problems