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Computing and ML systems news

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All Aerospace & Defense Distributed Systems Embedded Systems Formal Methods General SE Infrastructure Safety-Critical Systems Architecture

Formal MethodsOct 13, 2026

Rust Borrow Checker Bug Allows Lifetime Bound Bypasses via Covariant Field Assignment

A newly disclosed unsoundness issue in the Rust compiler permits programs to bypass struct lifetime requirements such as `T: 'static` via covariant field assignment. Present in compiler releases dating back 11 years, the hole allows short-lived references to escape scope checking through tailored `Drop` implementations.

Formal MethodsJul 19, 2026

Formally Verifying Cryptographic Primitives: Implementing Shannon Ciphers in Lean 4

This technical breakdown details the formal verification of the One-Time Pad protocol using the Lean 4 proof assistant. By leveraging dependent types and modular arithmetic libraries, we establish a machine-checked model of Shannon cipher correctness.