Critical [CVE-2026-77179] On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path
This critical-severity Docker advisory covers CVE-2026-77179 affecting Docker Sandboxes.
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Summary
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.
- Docker Sandboxes 0.28.0 before 0.42.0
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 25 days ago·verify at source
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