Someone just found an 11-year-old hole in Rust’s borrow checker...
👉Join the Rust Live Accelerator waitlist: https://letsgetrusty.com/join/wv-4iAi5exNHv8An 11-year-old soundness hole lets safe Rust code bypass a struct's lifetime requirements through field assignment. We break down Rust's safety model, then walk through how a custom Drop implementation can let a reference outlive its data.
GitHub issue and reproducer: https://github.com/rust-lang/rust/issues/164250
Chapters
0:00 An 11-year-old soundness hole in Rust
0:28 Safe Rust, unsafe Rust, and undefined behavior
3:00 How the lifetime-checking bug works
5:13 Demonstrating the dangling reference
5:56 What this means for Rust codebases
6:33 Project Zero and type-system soundness Receive SMS online on sms24.me
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