CVE-2026-24054
kata-containers: Kata Containers: Denial of Service and filesystem errors due to malformed container image processing
Severity by source
Trivy's own label is CRITICAL. Rated critical by NVD, Azure Linux. Rated lower by Red Hat (medium).
Description
Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. In versions prior to 3.26.0, when a container image is malformed or contains no layers, containerd falls back to bind-mounting an empty snapshotter directory for the container rootfs. When the Kata runtime attempts to mount the container rootfs, the bind mount causes the rootfs to be detected as a block device, leading to the underlying device being hotplugged to the guest. This can cause filesystem-level errors on the host due to double inode allocation, and may lead to the host's block device being mounted as read-only. Version 3.26.0 contains a patch for the issue.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Azure Linux 3.0 | kata-containers | 0:3.19.1.kata2-3.azl3 |
| rapidfort fedora 43 | kata-containers | 3.25.0-2.fc43 |
| Red Hat | kata-containers, openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9 | no fix listed |
Show all 5 entries from 3 sources
| Source | Package | Fixed in |
|---|---|---|
| Azure Linux 3.0 | kata-containers | 0:3.19.1.kata2-3.azl3 |
| rapidfort fedora 43 | kata-containers | 3.25.0-2.fc43 |
| Red Hat | kata-containers | no fix listed |
| Red Hat | openshift/ose-rhel-coreos-8 | no fix listed |
| Red Hat | openshift/ose-rhel-coreos-9 | no fix listed |
References
- https://access.redhat.com/security/cve/CVE-2026-24054
- https://github.com/containerd/containerd/blob/d939b6af5f8536c2cae85e919e7c40070557df0e/plugins/snapshots/overlay/overlay.go#L564-L581
- https://github.com/kata-containers/kata-containers/blob/a164693e1afead84cd01d5bc3575e2cbfe64ce35/src/runtime/virtcontainers/container.go#L1122-L1126
- https://github.com/kata-containers/kata-containers/blob/c7d0c270ee7dfaa6d978e6e07b99dabdaf2b9fda/src/runtime/virtcontainers/container.go#L1616-L1623
- https://github.com/kata-containers/kata-containers/commit/20ca4d2d79aa5bf63aa1254f08915da84f19e92a
- https://github.com/kata-containers/kata-containers/security/advisories/GHSA-5fc8-gg7w-3g5c
- https://nvd.nist.gov/vuln/detail/CVE-2026-24054
- https://www.cve.org/CVERecord?id=CVE-2026-24054