google/syzkaller
syzkaller is an unsupervised coverage-guided kernel fuzzer observed · 2026-08-28
Health v2 · maintenance only
77/100
- Activity 99
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3978
- days_rel: n/a
- days_push: 7
- n_releases_24m: 0
Adoption not part of the score
6309 stars · 1438 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
syzkaller is an unsupervised coverage-guided kernel fuzzer originally built for the Linux kernel and now supporting FreeBSD, Fuchsia, gVisor, NetBSD, OpenBSD, and Windows. It generates syscall sequences to discover kernel bugs and security vulnerabilities.
Use cases
- fuzz the linux kernel for bugs
- find kernel security vulnerabilities automatically
- test os kernel syscall interfaces
- discover kernel crashes with coverage-guided fuzzing
- fuzz freebsd or windows kernels
- set up continuous kernel bug finding like syzbot
When to choose
- you need to find memory-safety or logic bugs in an OS kernel
- you want an established, widely used kernel fuzzer with proven bug-finding track record
- you need coverage-guided syscall fuzzing across multiple operating systems
When to avoid
- you need to fuzz userspace applications rather than kernels
- you want a simple black-box fuzzer without kernel coverage instrumentation setup
- you cannot build instrumented kernels or run VMs
Facets
cli-tool · maturity active
fuzzing testing security vulnerability-scanning security operating-systems developer-tools testing go cli cross-platform kernel-fuzzing coverage-guided syscall-fuzzing os-kernels bug-finding linux
1 source
- readme: https://github.com/google/syzkaller · fetched 2026-08-28 · 9abeb11211a3
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| google/syzkaller | main | 77 |
For agents
markdown · JSON · MCP: product_card(name="google/syzkaller")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem