CVE-2026-24054 – Kata Containers Runtime: Host block device can be hotplugged to the VM if the container image is malformed or contains no layers

CVE ID : CVE-2026-24054

Published : Jan. 29, 2026, 6:16 p.m. | 53 minutes ago

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.

Severity: 8.8 | HIGH

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