● Covered by 1 source · 1 reportMedium impact1 neutral
Google Uses AI and Fuzzing to Rewrite C Dependencies to Rust, Eliminating Memory Vulnerabilities
Key points
- Google translated C-based giflib to Rust using Gemini.
- The Rust version is ABI-compatible and replaced the C library.
- Eliminated sandboxing and an unpatched zero-day vulnerability.
- Automated differential testing and human review were part of the process.
AI-Assisted C to Rust Translation
Google security teams leveraged Gemini to translate the C-based giflib image-processing library into a memory-safe Rust equivalent. This initiative aimed to address legacy memory vulnerabilities, which account for approximately 70% of severe security flaws in C and C++ stacks. The process focused on creating an ABI-compatible drop-in library.
Automated Migration Process
Software engineers Bastian Kersting and Max Hils developed a three-stage automated migration process. This involved using a single-shot prompt with Gemini to port the C library's logic to Rust, retaining original exported symbols and struct definitions for transparency. Human experts refined pointer ownership and lifetime invariants due to initial unsound raw pointer semantics.
Validation and Security Impact
Automated differential testing engines detected behavioral discrepancies, feeding failure traces back to the model for iterative patch synthesis. This method allowed Google to decommission process isolation sandboxes, maintain latency neutrality, and neutralize an unpatched heap write zero-day (CVE-2026-26740) before its public disclosure. A validation pipeline performed regression decoding across over 30 million real-world GIF assets to establish semantic equivalence.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
Google security teams used Gemini to translate the C-based giflib image-processing library into memory-safe Rust, then validated it with differential fuzzing. This process allowed Google to replace the C library with an ABI-compatible Rust version, removing the need for sandboxing and neutralizing an unpatched heap write zero-day.