RUSTSEC-2024-0431: Unsound usages of `core::slice::from_raw_parts`

What to do

1. See which version you have: cargo tree -i xous (it also shows which of your dependencies pulls it in).
2. Update within your version requirement: cargo update -p xous. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for example xous = "0.9.51") or update the dependency that pulls it in.
3. Check again with cargo audit, or paste your Cargo.lock into our Cargo.toml checker.

Details from the advisory

We consider as_slice and as_slice_mut unsound because: the pointer with any bit patterns could be cast to the slice of arbitrary types. The pointer could be created by unsafe new and deprecated from_parts. We consider that from_parts should be removed in latest version because it will help trigger unsoundness in as_slice. With new declared as unsafe, as_slice should also declared as unsafe.

This was patched in by marking two functions as unsafe.

References

• Package: crates.io/crates/xous
• Advisory: rustsec.org/advisories/RUSTSEC-2024-0431.html
• Report: github.com/betrusted-io/xous-core/issues/410
• Web: github.com/betrusted-io/xous-core/pull/411

From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.