cargo-fuzz

What problem does it solve?

Fuzz testing is essential for Rust projects to uncover security and reliability issues early. cargo-fuzz simplifies this by integrating libFuzzer with Cargo, automating build flags, harness setup, and test execution.

Core Features & Use Cases

• Integrated fuzzing workflow: cargo-fuzz provides a Cargo-based interface to run fuzz targets with libFuzzer.
• Harness and corpus management: Create and organize fuzz targets and seed corpora under fuzz/corpus.
• Sanitizer and coverage support: Supports AddressSanitizer and coverage tooling for robust diagnostics.
• Use cases: Use cargo-fuzz to harden libraries, validators, parsers, and protocols by discovering edge-case inputs.

Quick Start

Install nightly Rust toolchain, install cargo-fuzz, initialize fuzzing with cargo fuzz init, create a fuzz target under fuzz/fuzz_targets, and run fuzz with cargo +nightly fuzz run <target>.