Kata guest escape: runtime-rs guest-root to host-root escape via virtiofs

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CVE-2026-47243: Improper Limitation of a Pathname to a Restricted Directory

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines VMs that perform like containers. Prior to 3.31.0, the runtime-rs standalone virtio-fs path is vulnerable to a guest-root to host-root escape. In this configuration, Kata runs the host...

GO-2026-5042 Kata guest escape: runtime-rs guest-root to host-root escape via virtiofs in github.com/kata-containers/kata-containers

Kata guest escape: runtime-rs guest-root to host-root escape via virtiofs in github.com/kata-containers/kata-containers...

OESA-2026-2528 kata-containers security update

This is core component of Kata Container, to make it work, you need a isulad/docker engine. Security Fixes: 'This vulnerability was fixed in Kata Containers 3.31.0:', 'Description:\n\nIn the runtime-rs standalone virtio-fs path, Kata Containers runs virtiofsd\nas root with --sandbox none --seccom...

PT-2026-42534

Name of the Vulnerable Software and Affected Versions Kata Containers versions prior to 3.31.0 Description In the runtime-rs standalone virtio-fs path, the host virtiofsd is run as root with --sandbox none and --seccomp none. An attacker with root-equivalent access inside the guest VM can bypass...