CVE-2026-44210

Description

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Versions prior to 3.31.0 ship with a default configuration that allows pod creators to inject arbitrary command-line arguments into the virtiofsd process through the `io.katacontainers.config.hypervisor.virtio_fs_extra_args` pod annotation. By injecting `-o source=/` along with `--no-announce-submounts` and `--sandbox=none`, an attacker can override the virtiofsd shared directory to serve the entire host root filesystem into the guest VM. Combined with the `kernel_params` annotation (also enabled by default) to activate the agent debug console, the attacker can mount the host filesystem from inside the VM and read or write any file on the host, including /etc/shadow. Version 3.31.0 patches the issue.

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Produits concernés

• kata-containers
• Katacontainers kata containers

Scores CVSS

Faiblesses (CWE)

• CWE-88

Références

• https://github.com/kata-containers/kata-containers/commit/ffa59ce3aa7877d067c9a372df0c329a23a01744 Patch
• https://github.com/kata-containers/kata-containers/security/advisories/GHSA-rr59-xxvx-96qr ExploitVendor Advisory
• https://github.com/kata-containers/kata-containers/security/advisories/GHSA-rr59-xxvx-96qr ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories