vulnerability
Red Hat: CVE-2021-3667: CVE-2021-3667 libvirt: Improper locking on ACL failure in virStoragePoolLookupByTargetPath API (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:S/C:N/I:N/A:P) | Sep 30, 2021 | Oct 1, 2021 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:N/A:P)
Published
Sep 30, 2021
Added
Oct 1, 2021
Modified
Mar 27, 2026
Description
An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.
Solutions
redhat-upgrade-hivexredhat-upgrade-hivex-debuginforedhat-upgrade-hivex-debugsourceredhat-upgrade-hivex-develredhat-upgrade-libguestfsredhat-upgrade-libguestfs-bash-completionredhat-upgrade-libguestfs-benchmarkingredhat-upgrade-libguestfs-benchmarking-debuginforedhat-upgrade-libguestfs-debuginforedhat-upgrade-libguestfs-debugsourceredhat-upgrade-libguestfs-develredhat-upgrade-libguestfs-gfs2redhat-upgrade-libguestfs-gobjectredhat-upgrade-libguestfs-gobject-debuginforedhat-upgrade-libguestfs-gobject-develredhat-upgrade-libguestfs-inspect-iconsredhat-upgrade-libguestfs-javaredhat-upgrade-libguestfs-java-debuginforedhat-upgrade-libguestfs-java-develredhat-upgrade-libguestfs-javadocredhat-upgrade-libguestfs-man-pages-jaredhat-upgrade-libguestfs-man-pages-ukredhat-upgrade-libguestfs-rescueredhat-upgrade-libguestfs-rsyncredhat-upgrade-libguestfs-toolsredhat-upgrade-libguestfs-tools-credhat-upgrade-libguestfs-tools-c-debuginforedhat-upgrade-libguestfs-winsupportredhat-upgrade-libguestfs-xfsredhat-upgrade-libiscsiredhat-upgrade-libiscsi-debuginforedhat-upgrade-libiscsi-debugsourceredhat-upgrade-libiscsi-develredhat-upgrade-libiscsi-utilsredhat-upgrade-libiscsi-utils-debuginforedhat-upgrade-libnbdredhat-upgrade-libnbd-debuginforedhat-upgrade-libnbd-debugsourceredhat-upgrade-libnbd-develredhat-upgrade-libvirtredhat-upgrade-libvirt-adminredhat-upgrade-libvirt-admin-debuginforedhat-upgrade-libvirt-bash-completionredhat-upgrade-libvirt-clientredhat-upgrade-libvirt-client-debuginforedhat-upgrade-libvirt-daemonredhat-upgrade-libvirt-daemon-config-networkredhat-upgrade-libvirt-daemon-config-nwfilterredhat-upgrade-libvirt-daemon-debuginforedhat-upgrade-libvirt-daemon-driver-interfaceredhat-upgrade-libvirt-daemon-driver-interface-debuginforedhat-upgrade-libvirt-daemon-driver-networkredhat-upgrade-libvirt-daemon-driver-network-debuginforedhat-upgrade-libvirt-daemon-driver-nodedevredhat-upgrade-libvirt-daemon-driver-nodedev-debuginforedhat-upgrade-libvirt-daemon-driver-nwfilterredhat-upgrade-libvirt-daemon-driver-nwfilter-debuginforedhat-upgrade-libvirt-daemon-driver-qemuredhat-upgrade-libvirt-daemon-driver-qemu-debuginforedhat-upgrade-libvirt-daemon-driver-secretredhat-upgrade-libvirt-daemon-driver-secret-debuginforedhat-upgrade-libvirt-daemon-driver-storageredhat-upgrade-libvirt-daemon-driver-storage-coreredhat-upgrade-libvirt-daemon-driver-storage-core-debuginforedhat-upgrade-libvirt-daemon-driver-storage-diskredhat-upgrade-libvirt-daemon-driver-storage-disk-debuginforedhat-upgrade-libvirt-daemon-driver-storage-glusterredhat-upgrade-libvirt-daemon-driver-storage-gluster-debuginforedhat-upgrade-libvirt-daemon-driver-storage-iscsiredhat-upgrade-libvirt-daemon-driver-storage-iscsi-debuginforedhat-upgrade-libvirt-daemon-driver-storage-iscsi-directredhat-upgrade-libvirt-daemon-driver-storage-iscsi-direct-debuginforedhat-upgrade-libvirt-daemon-driver-storage-logicalredhat-upgrade-libvirt-daemon-driver-storage-logical-debuginforedhat-upgrade-libvirt-daemon-driver-storage-mpathredhat-upgrade-libvirt-daemon-driver-storage-mpath-debuginforedhat-upgrade-libvirt-daemon-driver-storage-rbdredhat-upgrade-libvirt-daemon-driver-storage-rbd-debuginforedhat-upgrade-libvirt-daemon-driver-storage-scsiredhat-upgrade-libvirt-daemon-driver-storage-scsi-debuginforedhat-upgrade-libvirt-daemon-kvmredhat-upgrade-libvirt-dbusredhat-upgrade-libvirt-dbus-debuginforedhat-upgrade-libvirt-dbus-debugsourceredhat-upgrade-libvirt-debuginforedhat-upgrade-libvirt-debugsourceredhat-upgrade-libvirt-develredhat-upgrade-libvirt-docsredhat-upgrade-libvirt-libsredhat-upgrade-libvirt-libs-debuginforedhat-upgrade-libvirt-lock-sanlockredhat-upgrade-libvirt-lock-sanlock-debuginforedhat-upgrade-libvirt-nssredhat-upgrade-libvirt-nss-debuginforedhat-upgrade-libvirt-python-debugsourceredhat-upgrade-lua-guestfsredhat-upgrade-lua-guestfs-debuginforedhat-upgrade-nbdfuseredhat-upgrade-nbdfuse-debuginforedhat-upgrade-nbdkitredhat-upgrade-nbdkit-bash-completionredhat-upgrade-nbdkit-basic-filtersredhat-upgrade-nbdkit-basic-filters-debuginforedhat-upgrade-nbdkit-basic-pluginsredhat-upgrade-nbdkit-basic-plugins-debuginforedhat-upgrade-nbdkit-curl-pluginredhat-upgrade-nbdkit-curl-plugin-debuginforedhat-upgrade-nbdkit-debuginforedhat-upgrade-nbdkit-debugsourceredhat-upgrade-nbdkit-develredhat-upgrade-nbdkit-example-pluginsredhat-upgrade-nbdkit-example-plugins-debuginforedhat-upgrade-nbdkit-gzip-pluginredhat-upgrade-nbdkit-gzip-plugin-debuginforedhat-upgrade-nbdkit-linuxdisk-pluginredhat-upgrade-nbdkit-linuxdisk-plugin-debuginforedhat-upgrade-nbdkit-python-pluginredhat-upgrade-nbdkit-python-plugin-debuginforedhat-upgrade-nbdkit-serverredhat-upgrade-nbdkit-server-debuginforedhat-upgrade-nbdkit-ssh-pluginredhat-upgrade-nbdkit-ssh-plugin-debuginforedhat-upgrade-nbdkit-vddk-pluginredhat-upgrade-nbdkit-vddk-plugin-debuginforedhat-upgrade-nbdkit-xz-filterredhat-upgrade-nbdkit-xz-filter-debuginforedhat-upgrade-netcfredhat-upgrade-netcf-debuginforedhat-upgrade-netcf-debugsourceredhat-upgrade-netcf-develredhat-upgrade-netcf-libsredhat-upgrade-netcf-libs-debuginforedhat-upgrade-ocaml-hivexredhat-upgrade-ocaml-hivex-debuginforedhat-upgrade-ocaml-hivex-develredhat-upgrade-ocaml-libguestfsredhat-upgrade-ocaml-libguestfs-debuginforedhat-upgrade-ocaml-libguestfs-develredhat-upgrade-ocaml-libnbdredhat-upgrade-ocaml-libnbd-debuginforedhat-upgrade-ocaml-libnbd-develredhat-upgrade-perl-hivexredhat-upgrade-perl-hivex-debuginforedhat-upgrade-perl-sys-guestfsredhat-upgrade-perl-sys-guestfs-debuginforedhat-upgrade-perl-sys-virtredhat-upgrade-perl-sys-virt-debuginforedhat-upgrade-perl-sys-virt-debugsourceredhat-upgrade-python3-hivexredhat-upgrade-python3-hivex-debuginforedhat-upgrade-python3-libguestfsredhat-upgrade-python3-libguestfs-debuginforedhat-upgrade-python3-libnbdredhat-upgrade-python3-libnbd-debuginforedhat-upgrade-python3-libvirtredhat-upgrade-python3-libvirt-debuginforedhat-upgrade-qemu-guest-agentredhat-upgrade-qemu-guest-agent-debuginforedhat-upgrade-qemu-imgredhat-upgrade-qemu-img-debuginforedhat-upgrade-qemu-kvmredhat-upgrade-qemu-kvm-block-curlredhat-upgrade-qemu-kvm-block-curl-debuginforedhat-upgrade-qemu-kvm-block-glusterredhat-upgrade-qemu-kvm-block-gluster-debuginforedhat-upgrade-qemu-kvm-block-iscsiredhat-upgrade-qemu-kvm-block-iscsi-debuginforedhat-upgrade-qemu-kvm-block-rbdredhat-upgrade-qemu-kvm-block-rbd-debuginforedhat-upgrade-qemu-kvm-block-sshredhat-upgrade-qemu-kvm-block-ssh-debuginforedhat-upgrade-qemu-kvm-commonredhat-upgrade-qemu-kvm-common-debuginforedhat-upgrade-qemu-kvm-coreredhat-upgrade-qemu-kvm-core-debuginforedhat-upgrade-qemu-kvm-debuginforedhat-upgrade-qemu-kvm-debugsourceredhat-upgrade-qemu-kvm-testsredhat-upgrade-qemu-kvm-tests-debuginforedhat-upgrade-ruby-hivexredhat-upgrade-ruby-hivex-debuginforedhat-upgrade-ruby-libguestfsredhat-upgrade-ruby-libguestfs-debuginforedhat-upgrade-seabiosredhat-upgrade-seabios-binredhat-upgrade-seavgabios-binredhat-upgrade-sgabiosredhat-upgrade-sgabios-binredhat-upgrade-slofredhat-upgrade-superminredhat-upgrade-supermin-debuginforedhat-upgrade-supermin-debugsourceredhat-upgrade-supermin-develredhat-upgrade-virt-dibredhat-upgrade-virt-dib-debuginforedhat-upgrade-virt-v2vredhat-upgrade-virt-v2v-debuginfo
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.