Description
Improper input validation in Kubernetes CSI sidecar containers for external-provisioner (<v0.4.3, <v1.0.2, v1.1, <v1.2.2, <v1.3.1), external-snapshotter (<v0.4.2, <v1.0.2, v1.1, <1.2.2), and external-resizer (v0.1, v0.2) could result in unauthorized PersistentVolume data access or volume mutation during snapshot, restore from snapshot, cloning and resizing operations.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Kubernetes | kubernetes-csi external-provisioner | prior to 1.0.2, 1.1, prior to 1.2.2, prior to 1.3.1, v1.14 – < prior to 0.4.3 | prior to 0.4.3 |
| Kubernetes | kubernetes-csi external-snapshotter | prior to 0.4.2, prior to 1.0.2, 1.1, prior to 1.2.2 | — |
| Kubernetes | kubernetes-csi external-resizer | 0.1, 0.2 | — |
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenShift 4 | openshift-external-storage +6 | 0.0.2-11.gitd3c94f0.el7 | RHSA-2019:4225, RHSA-2019:4096 |
| Red Hat OpenShift 3 | openshift-external-storage +6 | 0.0.2-10.gitd3c94f0.el7 | RHSA-2019:4054 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | kubernetes-csi-external-provisioner | 4.0.1-r1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/kubernetes-csi/external-provisioner | < 0.4.3 | 0.4.3 | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-provisioner | >= 1.0.0, < 1.0.2 | 1.0.2 | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-provisioner | 1.1 | — | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-provisioner | >= 1.2.0, < 1.2.2 | 1.2.2 | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-provisioner | >= 1.3.0, < 1.3.1 | 1.3.1 | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-resizer | 0.1 | — | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-resizer | 0.2 | — | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-snapshotter/v6 | >= 1.0.0, < 1.0.2 | 1.0.2 | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-snapshotter/v6 | 1.1 | — | GHSA-f4w6-3rh6-6q4q |
| Go | github.com/kubernetes-csi/external-snapshotter/v6 | >= 1.2.0, < 1.2.2 | 1.2.2 | GHSA-f4w6-3rh6-6q4q |
Advisories 3
- RHSA-2019:4096 Red Hat Security Advisory: OpenShift Container Platform 4.2 openshift-external-storage security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
- RHSA-2019:4225 Red Hat Security Advisory: OpenShift Container Platform 4.1 openshift-external-storage security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
- RHSA-2019:4054 Red Hat Security Advisory: OpenShift Container Platform 3.11 openshift-external-storage security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
References
- https://github.com/kubernetes/kubernetes/issues/85233
- Security release of kubernetes-csi sidecars - CVE-2019-11255 mailing-list
- RHSA-2019:4099 vendor-advisory
- RHSA-2019:4096 vendor-advisory
- RHSA-2019:4054 vendor-advisory
- RHSA-2019:4225 vendor-advisory
- https://security.netapp.com/advisory/ntap-20200810-0003/