Sandboxing AI Agents at the Kernel Level
7 hours ago
- #AI Security
- #Containerization
- #Linux Kernel
- Greptile uses AI for code review by allowing the agent to navigate the filesystem via terminal.
- Running AI agents on cloud machines introduces security risks, such as potential data leaks.
- Application-level safeguards like input sanitization and LLM protections can be bypassed by clever attackers.
- The Linux kernel's open syscall is central to file access, with three key stages where access can be denied.
- Three methods to hide files: chmod (permission checks), mount masking, and chroot (changing root directory).
- Mount namespaces allow processes to have isolated views of the filesystem, enhancing security.
- Containerization combines mount namespaces and root changes to create secure sandboxes for processes.
- Greptile runs its agent in a rootless Podman container for kernel-enforced security.