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bytecodealliance / wasmtime

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fuzzing: Use `wasm-encoder` rather than generating WAT text and then assembling it in dummy imports

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fitzgen
fitzgen commented Dec 11, 2020

In bytecodealliance/wasmtime#2497 (comment) we added support for generating nested modules, and we generate these modules by concatenating strings of WAT and then passing it to Module::new which internally checks for WAT strings and assembles them into Wasm bytes if necessary.

We can make this more efficient, improving the number of test cases we fuzz in a

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good first issue fuzzing

lunatic-solutions / lunatic

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Forbid processes to allow namespaces that they doesn't have access to themselves

bkolobara
bkolobara commented Dec 14, 2021

Currently, if you create an environment from a process that has the permission to call lunatic::process::allow_namespace it can give greater permissions to sub-processes spawned into the new environment than it has itself.

The lunatic::process::allow_namespace host function should first check if we have permissions for the namespace before allowing us to add it to other environments. Simila

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good first issue

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