CVE-2026-63623
Fixed in a distro release EPSS <1%CVSS 5.5
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.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux for NVIDIA 26
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | libvirt | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-admin | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-bash-completion | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-client | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-config-network | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-config-nwfilter | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-interface | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-lxc | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-network | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-nodedev | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-nwfilter | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-qemu | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-secret | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-core | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-disk | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-gluster | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-iscsi | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-logical | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-mpath | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-rbd | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-driver-storage-scsi | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-kvm | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-daemon-lxc | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-devel | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-docs | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-libs | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-lock-sanlock | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-login-shell | 4.5.0-36.amzn2.3.3 |
| Amazon Linux 2 | libvirt-nss | 4.5.0-36.amzn2.3.3 |
| Debian 12 | libvirt | no fix |
| Debian 13 | libvirt | 11.3.0-3+deb13u3 |
| Debian 14 | libvirt | 12.6.0-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | libvirt | 8.0.0-150400.7.17.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | libvirt | 8.0.0-150400.7.17.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | libvirt | 9.0.0-150500.6.29.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | libvirt | 9.0.0-150500.6.29.1 |
| SUSE Linux Enterprise Micro 5.3 | libvirt | 8.0.0-150400.7.17.1 |
| SUSE Linux Enterprise Micro 5.4 | libvirt | 8.0.0-150400.7.17.1 |
| SUSE Linux Enterprise Micro 5.5 | libvirt | 9.0.0-150500.6.29.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | libvirt | 11.0.0-150700.4.27.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | libvirt | 11.0.0-150700.4.27.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | libvirt | 5.1.0-13.48.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | libvirt | 8.0.0-150400.7.17.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | libvirt | 9.0.0-150500.6.29.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | libvirt | 10.0.0-150600.8.18.1 |
| SUSE Linux Enterprise Server 16.0 | libvirt | 11.4.0-160000.5.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | libvirt | 5.1.0-13.48.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | libvirt | 8.0.0-150400.7.17.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | libvirt | 9.0.0-150500.6.29.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | libvirt | 10.0.0-150600.8.18.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | libvirt | 11.4.0-160000.5.1 |
| SUSE Linux Micro 6.0 | libvirt | 10.0.0-5.1 |
| SUSE Linux Micro 6.1 | libvirt | 10.0.0-slfo.1.1_3.1 |
| SUSE Linux Micro 6.2 | libvirt | 11.4.0-160000.5.1 |
| Ubuntu 22.04 LTS | libvirt | 8.0.0-1ubuntu7.19 |
| Ubuntu 24.04 LTS | libvirt | 10.0.0-2ubuntu8.16 |
| Ubuntu 26.04 LTS | libvirt | 12.0.0-1ubuntu5.3 |
| Ubuntu 26.04 LTS | libvirt-hwe | 12.0.0-1ubuntu5.5 |
| Ubuntu Pro 14.04 LTS | libvirt | 1.2.2-0ubuntu13.1.28+esm2 |
| Ubuntu Pro 16.04 LTS | libvirt | 1.3.1-1ubuntu10.31+esm1 |
| Ubuntu Pro 18.04 LTS | libvirt | 4.0.0-1ubuntu8.21+esm1 |
| Ubuntu Pro 20.04 LTS | libvirt | 6.0.0-0ubuntu8.20+esm1 |
| openSUSE Leap 16.0 | libvirt | 11.4.0-160000.5.1 |
| openSUSE Tumbleweed | libvirt | 12.6.0-1.1 |