Description
KubeVirt is a virtual machine management add-on for Kubernetes. The `hostDisk` feature in KubeVirt allows mounting a host file or directory owned by the user with UID 107 into a VM. However, prior to version 1.6.1 and 1.7.0, the implementation of this feature and more specifically the `DiskOrCreate` option (which creates a file if it doesn't exist) has a logic bug that allows an attacker to read and write arbitrary files owned by more privileged users on the host system. Versions 1.6.1 and 1.7.0 fix the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| kubevirt | kubevirt | < 1.6.1, 1.7.0-alpha.0 – < 1.7.0-rc.0 | 1.6.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | kubevirt | 1.6.3-150700.3.13.1 | SUSE-SU-2025:4330-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kubevirt | 1.6.3-1 | — |
| Azure Linux 2 (CBL-Mariner) | kubevirt | 0.59.0-31 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | docker-machine-driver-harvester | 1.0.6-r4 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | kubevirt.io/kubevirt | < 1.6.1 | 1.6.1 | GHSA-46xp-26xh-hpqh |
| Go | kubevirt.io/kubevirt | >= 1.7.0-alpha.0, < 1.7.0-rc.0 | 1.7.0-rc.0 | GHSA-46xp-26xh-hpqh |
| Go | kubevirt.io/kubevirt | < 1.6.1 · >= 1.6.2, < 1.7.0-rc.0 | 1.6.1, 1.7.0-rc.0 | GO-2025-4110 |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- SUSE-SU-2025:4330-1 Security update for kubevirt, virt-api-container, virt-controller-container, virt-exportproxy-container, virt-exportserver-container, virt-handler-container, virt-launcher-container, virt-libguestfs-tools-container, virt-operator-container, virt-pr-helper-container SUSE / openSUSE Security Updates · Mar 23, 2026