# Mold 3.0.0 ships Rust rewrite with safer input handling

_Published Monday, October 5, 2026 at 12:08 PM EDT · Infrastructure · Latest · Tier 2 — Notable_

![mold 3.0.0 is a new major release of the high-speed linker. As we announced in the 2.42.1 release notes, we have rewritten mold from C++ to Rust, and this is the first release of the Rust version. ... — Primary](https://opengraph.githubassets.com/7659ccb6795b17238e8855883fc309052cecaa79c55327aa08ae0c544bcfcf39/rui314/mold/releases/tag/v3.0.0)

The mold project released version 3.0.0 of its linker, the tool that combines compiled code into executable programs, replacing its C++ implementation with Rust. The release notes say corrupted input now triggers bounds-checked failures rather than the out-of-bounds memory reads possible in the C++ version.

The maintainers describe the release as a drop-in replacement for 2.42.1, with the same options, target architectures and comparable linking performance. It also fixes crashes, corrupted output and architecture-specific errors. Building mold now requires Cargo, Rust 1.95 or later and a C compiler. Closing remaining GNU ld compatibility gaps remains a goal for the 3.x series.

## Sources

- [GitHub](https://github.com/rui314/mold/releases/tag/v3.0.0)

---
Canonical: https://techandbusiness.org/newswire/1BTDvXPLJfCrrP4ryo72ep
Published: 2026-10-05T16:08:24.855Z
Story chronology: 2026-10-05T11:17:18.000Z
Retrieved: 2026-10-05T18:11:16.039Z
Publisher: Tech & Business (techandbusiness.org)