Upcoming security release for Wasmtime

[Alex Crichton]

The Bytecode Alliance would like to announce a forthcoming security
release of Wasmtime.

The release will be made available on 2023-03-08 at approximately
19:00 UTC. Additionally, an advisory will be made available on the
same date and time at https://github.com/advisories.

The highest severity issue fixed in this release is CRITICAL based on
the classification scheme defined in the OpenSSL Security Policy.

[Alex Crichton]

[Update 2023-03-08] Security releases available

Wasmtime 6.0.1, 5.0.1, and 4.0.1 are now available on crates.io.
Additionally, binary releases are available on Github for the Wasmtime
C-API shared library and CLI at
https://github.com/bytecodealliance/wasmtime/releases.

This release fixes the following security issues rated CRITICAL:

* Guest-controlled out-of-bounds read/write on x86_64.
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-ff4p-7xrq-q5r8

This release fixes the following security issues rated LOW:

* Miscompilation of `i8x16.select` with the same inputs on x86_64
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xm67-587q-r2vw