RUSTSEC-2022-0096 Invalid drop of VMExternRef from partially-initialized instances in the pooling instance allocator

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-88xq-w8cq-xfg7. For more information see the GitHub-hosted security advisory...

GHSA-88XQ-W8CQ-XFG7 Invalid drop of partially-initialized instances in the pooling instance allocator for modules with defined `externref` globals

Impact There exists a bug in the pooling instance allocator in Wasmtime's runtime where a failure to instantiate an instance for a module that defines an externref global will result in an invalid drop of a VMExternRef via an uninitialized pointer. As instance slots may be reused between...