UBUNTU-CVE-2026-63622

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Source
https://ubuntu.com/security/CVE-2026-63622
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63622.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-63622
Upstream
  • CVE-2026-63622
Published
2026-08-13T00:00:00Z
Modified
2026-08-15T01:45:04.558254525Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in libvirt. A local attacker, specifically a process running as the confined swtpm user, could exploit a symlink-following vulnerability in the virFileChownFiles() function. By planting a symbolic link within the swtpm state directory, the attacker could trick the root-level libvirt daemon into changing the ownership of an arbitrary file to the swtpm user. This allows for privilege escalation from the swtpm sandbox to root-level file ownership control.

References

Affected packages

Ubuntu:20.04:LTS / libvirt

Package

Name
libvirt
Purl
pkg:deb/ubuntu/libvirt?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.4.0-0ubuntu5
6.*
6.0.0-0ubuntu1
6.0.0-0ubuntu2
6.0.0-0ubuntu3
6.0.0-0ubuntu4
6.0.0-0ubuntu5
6.0.0-0ubuntu6
6.0.0-0ubuntu7
6.0.0-0ubuntu8
6.0.0-0ubuntu8.1
6.0.0-0ubuntu8.2
6.0.0-0ubuntu8.3
6.0.0-0ubuntu8.4
6.0.0-0ubuntu8.5
6.0.0-0ubuntu8.7
6.0.0-0ubuntu8.8
6.0.0-0ubuntu8.9
6.0.0-0ubuntu8.10
6.0.0-0ubuntu8.11
6.0.0-0ubuntu8.12
6.0.0-0ubuntu8.13
6.0.0-0ubuntu8.14
6.0.0-0ubuntu8.15
6.0.0-0ubuntu8.16
6.0.0-0ubuntu8.19
6.0.0-0ubuntu8.20

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libnss-libvirt"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-clients"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-lxc"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-qemu"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-storage-gluster"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-storage-rbd"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-storage-zfs"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-vbox"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-driver-xen"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-system"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-system-systemd"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-daemon-system-sysv"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-sanlock"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt-wireshark"
        },
        {
            "binary_version": "6.0.0-0ubuntu8.20",
            "binary_name": "libvirt0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63622.json"

Ubuntu:22.04:LTS / libvirt

Package

Name
libvirt
Purl
pkg:deb/ubuntu/libvirt?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*
7.6.0-0ubuntu1
7.6.0-0ubuntu3
8.*
8.0.0-1ubuntu3
8.0.0-1ubuntu4
8.0.0-1ubuntu5
8.0.0-1ubuntu6
8.0.0-1ubuntu7
8.0.0-1ubuntu7.1
8.0.0-1ubuntu7.2
8.0.0-1ubuntu7.3
8.0.0-1ubuntu7.4
8.0.0-1ubuntu7.5
8.0.0-1ubuntu7.6
8.0.0-1ubuntu7.7
8.0.0-1ubuntu7.8
8.0.0-1ubuntu7.9
8.0.0-1ubuntu7.10
8.0.0-1ubuntu7.11
8.0.0-1ubuntu7.12
8.0.0-1ubuntu7.13
8.0.0-1ubuntu7.14
8.0.0-1ubuntu7.15
8.0.0-1ubuntu7.16
8.0.0-1ubuntu7.17
8.0.0-1ubuntu7.18

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libnss-libvirt"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-clients"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-config-network"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-config-nwfilter"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-lxc"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-qemu"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-storage-gluster"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-storage-iscsi-direct"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-storage-rbd"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-storage-zfs"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-vbox"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-driver-xen"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-system"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-system-systemd"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-daemon-system-sysv"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-login-shell"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-sanlock"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt-wireshark"
        },
        {
            "binary_version": "8.0.0-1ubuntu7.18",
            "binary_name": "libvirt0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63622.json"

Ubuntu:24.04:LTS / libvirt

Package

Name
libvirt
Purl
pkg:deb/ubuntu/libvirt?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

9.*
9.6.0-1ubuntu1
9.6.0-1ubuntu2
10.*
10.0.0-1ubuntu1
10.0.0-2ubuntu1
10.0.0-2ubuntu5
10.0.0-2ubuntu7
10.0.0-2ubuntu8
10.0.0-2ubuntu8.1
10.0.0-2ubuntu8.2
10.0.0-2ubuntu8.3
10.0.0-2ubuntu8.4
10.0.0-2ubuntu8.5
10.0.0-2ubuntu8.6
10.0.0-2ubuntu8.7
10.0.0-2ubuntu8.8
10.0.0-2ubuntu8.9
10.0.0-2ubuntu8.10
10.0.0-2ubuntu8.11
10.0.0-2ubuntu8.12
10.0.0-2ubuntu8.13
10.0.0-2ubuntu8.14
10.0.0-2ubuntu8.15

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libnss-libvirt"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-clients"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-clients-qemu"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-config-network"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-config-nwfilter"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-lxc"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-qemu"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-storage-gluster"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-storage-iscsi-direct"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-storage-rbd"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-storage-zfs"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-vbox"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-driver-xen"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-system"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-system-systemd"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-daemon-system-sysv"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-l10n"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-login-shell"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-sanlock"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt-wireshark"
        },
        {
            "binary_version": "10.0.0-2ubuntu8.15",
            "binary_name": "libvirt0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63622.json"

Ubuntu:26.04:LTS / libvirt

Package

Name
libvirt
Purl
pkg:deb/ubuntu/libvirt?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

11.*
11.6.0-1ubuntu3
11.6.0-1ubuntu5
11.6.0-1ubuntu6
11.6.0-1ubuntu7
11.6.0-1ubuntu8
12.*
12.0.0-1ubuntu3
12.0.0-1ubuntu5
12.0.0-1ubuntu5.1
12.0.0-1ubuntu5.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libnss-libvirt"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-clients"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-clients-qemu"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-common"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-common"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-config-network"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-config-nwfilter"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-interface"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-lxc"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-network"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-nodedev"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-nwfilter"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-qemu"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-secret"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-disk"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-gluster"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-iscsi"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-iscsi-direct"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-logical"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-mpath"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-rbd"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-scsi"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-storage-zfs"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-vbox"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-driver-xen"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-lock"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-log"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-plugin-lockd"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-plugin-sanlock"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-system"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-system-systemd"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-daemon-system-sysv"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-l10n"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-login-shell"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-sanlock"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-ssh-proxy"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt-wireshark"
        },
        {
            "binary_version": "12.0.0-1ubuntu5.2",
            "binary_name": "libvirt0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63622.json"