cargo-fuzz

Detect memory safety issues in Rust code using libFuzzer via Cargo.

1|Updated Apr 7, 2026
One-click install
npx skills add https://github.com/rohanbhatia27/rohanstutoring-redesign --skill cargo-fuzz-rohanbhatia27
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: cargo-fuzz
Source: https://github.com/rohanbhatia27/rohanstutoring-redesign/tree/main/.agents/skills/cargo-fuzz
Command: npx skills add https://github.com/rohanbhatia27/rohanstutoring-redesign --skill cargo-fuzz-rohanbhatia27

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires libfuzzer, rustup, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill streamlines the process of fuzzing Rust code, leveraging Cargo's integration with libFuzzer, enabling efficient and effective bug discovery in Rust projects.

Core Features & Use Cases

  • Rust Project Integration: Seamlessly integrates with Cargo, simplifying the setup and management of fuzzing for Rust projects.
  • libFuzzer Backend: Utilizes the powerful libFuzzer backend for robust and comprehensive fuzzing.
  • Quick Setup: Offers a simple command to initialize fuzzing with minimal configuration.
  • Sanitizer Support: Integrates with sanitizers like AddressSanitizer for enhanced memory safety checks.
  • Use Case: Ideal for Rust developers looking to implement fuzz testing as part of their development workflow to uncover memory safety issues early.

Quick Start

Initialize and run fuzzing for your Rust project with:

cargo fuzz init
cargo +nightly fuzz run fuzz_target_1

Frequently Asked Questions about cargo-fuzz

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I set up fuzz testing for my Rust project with Cargo?

To set up fuzz testing for a Rust project, initialize the fuzzing targets using the `cargo fuzz init` command, then execute them with `cargo +nightly fuzz run`. This integrates directly with Cargo to manage the fuzzing workflow.

Does fuzzing Rust code with libFuzzer require the nightly toolchain?

Yes, fuzzing Rust code with libFuzzer requires the nightly Rust toolchain. You must execute the fuzz targets using `cargo +nightly fuzz run` to access the unstable compiler flags needed for sanitizer and fuzzer instrumentation.

What kind of bugs does Cargo fuzz testing discover in Rust?

Cargo fuzz testing discovers memory safety issues in Rust code by executing it with the libFuzzer backend. It integrates with sanitizers like AddressSanitizer to detect and report invalid memory accesses and buffer overflows.

Can I use AddressSanitizer with Cargo's integrated fuzzer?

Yes, you can use AddressSanitizer with Cargo's integrated fuzzer. The fuzzing process supports sanitizer integration, enabling enhanced memory safety checks to uncover hidden bugs during the automated test case generation.

What is the best way to automate bug discovery in Rust code?

The best way to automate bug discovery in Rust is by using Cargo's integrated fuzzer to run libFuzzer. This approach automatically generates malformed inputs to detect memory safety vulnerabilities early in the development workflow.