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RUSTSEC-2022-0075

Bug in pooling instance allocator

Details

bug in Wasmtime's implementation of its pooling instance allocator where when a linear memory is reused for another instance the initial heap snapshot of the prior instance can be visible, erroneously to the next instance.

Mitigations are described [here](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wh6w-3828-g9qf).

Are you affected?

Enter the version of the package you're using.

Affected packages

crates.io / wasmtime

Introduced in: 0.0.0-0 Fixed in: 1.0.2

Upgrade wasmtime to 1.0.2 or newer (ecosystem crates.io).

References

https://crates.io/crates/wasmtime [PACKAGE]
https://rustsec.org/advisories/RUSTSEC-2022-0075.html [ADVISORY]
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wh6w-3828-g9qf [ADVISORY]
https://github.com/bytecodealliance/wasmtime/commit/2614f2e9d2d36805ead8a8da0fa0c6e0d9e428a0 [WEB]
https://github.com/bytecodealliance/wasmtime/commit/3535acbf3be032ef1ba0b469b8ab92538a8a18a6 [WEB]