CVE-2026-77179

Description

On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution.

References

• https://docs.docker.com/ai/sandboxes/
• https://docs.docker.com/ai/sandboxes/security/isolation/
• https://github.com/docker/sbx-releases/releases/tag/v0.42.0