Description
KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, due to the peer verification logic in virt-handler (via verifyPeerCert), an attacker who compromises a virt-handler instance, could exploit these shared credentials to impersonate virt-api and execute privileged operations against other virt-handler instances potentially compromising the integrity and availability of the VM managed by it. This vulnerability is fixed in 1.5.3 and 1.6.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| kubevirt | kubevirt | < 1.5.3, >= 1.6.0-alpha.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 | 1.5.3-2 | — |
| Azure Linux 2 (CBL-Mariner) | kubevirt | 0.59.0-33 | — |
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 | < 1.5.3 | 1.5.3 | GHSA-ggp9-c99x-54gp |
| Go | kubevirt.io/kubevirt | >= 1.6.0-alpha.0, < 1.6.1 | 1.6.1 | GHSA-ggp9-c99x-54gp |
| Go | kubevirt.io/kubevirt | < 1.5.3 · >= 1.6.0-alpha.0, < 1.6.0-beta.0.0.20250730135146-231dc69723f3 · >= 1.6.0-rc.0, < 1.6.1 | 1.5.3, 1.6.0-beta.0.0.20250730135146-231dc69723f3, 1.6.1 | GO-2025-4107 |
Advisories 3
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- WID-SEC-2025-2563 Microsoft Azure Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 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
References
- https://github.com/kubevirt/kubevirt/security/advisories/GHSA-ggp9-c99x-54gp
- https://github.com/kubevirt/kubevirt/commit/231dc69723f331dc02f65a31ab4c3d6869f40d6a
- https://github.com/kubevirt/kubevirt/commit/af2f08a9a186eccc650f87c30ab3e07b669e8b5b
- https://github.com/kubevirt/kubevirt/commit/b9773bc588e6e18ece896a2dad5336ef7a653074