CVE catalog
CVE-2026-63623
A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with over
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.10% · Oct 25, 2026
A flaw was found in libvirt. During storage volume clone or convert operations, newly created volume images were temporarily world-readable. This was caused by the `qemu-img` utility running with overly permissive file creation settings, allowing any local user to read the full guest disk contents. This vulnerability could lead to sensitive information disclosure from guest virtual machines.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libvirt | sid | 12.8.0-1 | fixed |
| Debian | libvirt | forky | 12.8.0-1 | fixed |
| Debian | libvirt | trixie | 11.3.0-3+deb13u3 | fixed |
| Debian | libvirt | bookworm | 9.0.0-4+deb12u2 | vulnerable |
| Ubuntu | libvirt | pro | 5.4.0-0ubuntu5 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu1 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu2 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu3 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu4 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu5 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu6 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu7 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.1 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.2 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.3 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.4 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.5 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.7 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.8 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.9 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.10 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.11 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.12 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.13 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.14 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.15 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.16 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.19 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.20 | vulnerable |
| Ubuntu | libvirt | pro | 6.0.0-0ubuntu8.20+esm1 | fixed |
| Ubuntu | libvirt | 22.04 | 7.6.0-0ubuntu1 | vulnerable |
| Ubuntu | libvirt | 22.04 | 7.6.0-0ubuntu3 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu3 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu4 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu5 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu6 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.1 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.2 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.3 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.4 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.5 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.6 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.7 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.8 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.9 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.10 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.11 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.12 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.13 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.14 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.15 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.16 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.17 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.18 | vulnerable |
| Ubuntu | libvirt | 22.04 | 8.0.0-1ubuntu7.19 | fixed |
| Ubuntu | libvirt | 24.04 | 9.6.0-1ubuntu1 | vulnerable |
| Ubuntu | libvirt | 24.04 | 9.6.0-1ubuntu2 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-1ubuntu1 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu1 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu5 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu7 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.1 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.2 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.3 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.4 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.5 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.6 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.7 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.8 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.9 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.10 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.11 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.12 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.13 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.14 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.15 | vulnerable |
| Ubuntu | libvirt | 24.04 | 10.0.0-2ubuntu8.16 | fixed |
| Ubuntu | libvirt | 26.04 | 11.6.0-1ubuntu3 | vulnerable |
| Ubuntu | libvirt | 26.04 | 11.6.0-1ubuntu5 | vulnerable |
| Ubuntu | libvirt | 26.04 | 11.6.0-1ubuntu6 | vulnerable |
| Ubuntu | libvirt | 26.04 | 11.6.0-1ubuntu7 | vulnerable |
| Ubuntu | libvirt | 26.04 | 11.6.0-1ubuntu8 | vulnerable |
| Ubuntu | libvirt | 26.04 | 12.0.0-1ubuntu3 | vulnerable |
| Ubuntu | libvirt | 26.04 | 12.0.0-1ubuntu5 | vulnerable |
| Ubuntu | libvirt | 26.04 | 12.0.0-1ubuntu5.1 | vulnerable |
| Ubuntu | libvirt | 26.04 | 12.0.0-1ubuntu5.2 | vulnerable |
| Ubuntu | libvirt | 26.04 | 12.0.0-1ubuntu5.3 | fixed |
| Ubuntu | libvirt-hwe | 26.04 | 12.0.0-1ubuntu5 | vulnerable |
| Ubuntu | libvirt-hwe | 26.04 | 12.0.0-1ubuntu5.1 | vulnerable |
| Ubuntu | libvirt-hwe | 26.04 | 12.0.0-1ubuntu5.2 | vulnerable |
| Ubuntu | libvirt-hwe | 26.04 | 12.0.0-1ubuntu5.3 | vulnerable |
| Ubuntu | libvirt-hwe | 26.04 | 12.0.0-1ubuntu5.5 | fixed |
| Opensuse | libvirt | tumbleweed | 12.6.0-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libvirt | source | sid | 12.6.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libvirt | source | forky | 12.6.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libvirt | source | trixie | 11.3.0-3+deb13u3 | not yet assigned | Not reported | Not reported |
| Debian | libvirt | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Ubuntu | libvirt | deb | pro | 6.0.0-0ubuntu8.20+esm1 | Not reported | UBUNTU-CVE-2026-63623 | Not reported |
| Ubuntu | libvirt | deb | 22.04 | 8.0.0-1ubuntu7.19 | Not reported | UBUNTU-CVE-2026-63623 | Not reported |
| Ubuntu | libvirt | deb | 24.04 | 10.0.0-2ubuntu8.16 | Not reported | UBUNTU-CVE-2026-63623 | Not reported |
| Ubuntu | libvirt | deb | 26.04 | 12.0.0-1ubuntu5.3 | Not reported | UBUNTU-CVE-2026-63623 | Not reported |
| Ubuntu | libvirt-hwe | deb | 26.04 | 12.0.0-1ubuntu5.5 | Not reported | UBUNTU-CVE-2026-63623 | Not reported |
| Opensuse | libvirt | rpm | tumbleweed | 12.6.0-1.1 | Not reported | OPENSUSE-SU-2026:11455-1 | Not reported |
Notes
[bookworm] libvirt: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libnss-libvirt]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt0]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-clients]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-clients-qemu]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· all · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· all · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· all · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· all · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-common]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-common]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-config-network]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· all · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· all · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· all · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· all · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-config-nwfilter]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· all · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· all · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· all · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· all · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-interface]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-lxc]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-network]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-nodedev]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-nwfilter]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-qemu]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-secret]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-storage]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-storage-disk]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-storage-gluster]Affected
Source package: [libvirt]
Details (4)
9.0.0-4+deb12u2· amd64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
9.0.0-4+deb12u2· arm64 · bookwormAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
- [libvirt-daemon-driver-storage-iscsi]Affected
Source package: [libvirt]
Details (2)
11.3.0-2~bpo12+1· amd64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
11.3.0-2~bpo12+1· arm64 · bookworm-backportsAffected
nvd · libvirt · debian · bookworm; nvd · libvirt · debian · 12
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11455-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-63623]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-63623]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-63623]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11455-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-63623]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63623.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2724.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]