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STIMSMITH

Fuzzilicon

Tool
First seen 6/13/2026
Last seen 7/4/2026
Evidence 2 chunks

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RELATIONSHIPS

17 connections
post-silicon fuzzing implements → 99% 2e
Fuzzilicon implements post-silicon fuzzing on x86 CPUs.
Coverage-Guided Fuzzing implements → 95% 1e
Fuzzilicon applies coverage-guided fuzzing to commercial x86 CPUs.
microcode patching uses → 95% 1e
Fuzzilicon re-purposes the microcode patch interface as a programmable introspection layer.
microarchitectural introspection uses → 95% 1e
Fuzzilicon uses microarchitectural introspection by inserting lightweight instrumentation into the processor to observe internal execution states.
reverse engineering uses → 95% 1e
Fuzzilicon uses reverse engineering to construct microcode patches that instrument internal microcode execution paths.
bare-metal hypervisor-based fuzzing framework uses → 97% 1e
Fuzzilicon builds a bare-metal, hypervisor-based fuzzing framework that isolates the device under test and monitors execution.
serialization oracle introduces → 97% 1e
Fuzzilicon introduces a serialization oracle that synthesizes semantically equivalent variants of instruction sequences.
Red-Unlock mode uses → 85% 1e
Fuzzilicon leverages Red-Unlock mode as part of its microarchitectural introspection and microcode patching approach.
CPU evaluates → 97% 1e
Fuzzilicon evaluates real post-silicon x86 CPUs for vulnerabilities and rare execution paths.
microarchitecture evaluates → 90% 1e
Fuzzilicon evaluates microarchitectural implementations by detecting divergences across them.
device under test uses → 92% 1e
Fuzzilicon's framework isolates the device under test to ensure safe and deterministic execution.
Fuzzilicon: A Post-Silicon Microcode-Guided x86 CPU Fuzzer ← introduces 98% 1e
The paper introduces the Fuzzilicon tool for post-silicon fuzzing.
microcode-level instrumentation uses → 99% 1e
Fuzzilicon uses microcode-level instrumentation to extract feedback from the processor.
Coverage-Guided Fuzzing uses → 98% 1e
Fuzzilicon combines microcode-level instrumentation with coverage-guided fuzzing.
microarchitectural vulnerability detection evaluates → 95% 1e
Fuzzilicon targets detection of microarchitectural vulnerabilities invisible to black-box fuzzing.
x86 CPU uses → 99% 1e
Fuzzilicon targets x86 CPUs for post-silicon fuzzing.
microcode uses → 98% 1e
Fuzzilicon uses microcode execution feedback for guiding fuzzing.