Linux 7.0 makes Rust official for kernel development

Linux 7.0 landed with more than a version bump. It marked the moment Rust stopped being a kernel-side trial balloon and became part of the official development story, a shift that matters far beyond the release notes because it gives Rust a real place in one of open source’s most conservative codebases. The release was the first major Linux version jump since 6.0 shipped in October 2022, and it followed the 2025 Maintainers Summit in Tokyo, where developers concluded that the Rust experiment was over and that Rust belonged in the kernel for good.

That change is bigger than a naming decision. The kernel documentation had described Rust support in v6.1 as an experiment meant to test whether the language fit technically, procedurally, and socially. Now the same documentation frames Rust as a supported path for kernel developers and maintainers working on abstractions, drivers, infrastructure, and tools. It also points users toward rustdoc and a Quick Start guide, while making clear that the toolchain still depends on LLVM and bindgen and that architecture support varies. For hobbyists who have been waiting to see whether Rust-in-kernel skills were worth building, that is the signal that matters: the learning path is documented, the maintenance story is real, and the language is no longer being treated like a side project.

The proof is already in tree. Rust for Linux says the Android Binder driver rewrite was merged into Linux kernel v6.18-rc1, and LWN reported that the Rust Binder implementation passed the full Binder test suite and could boot and run an Android device. Binder is Android’s primary IPC mechanism, which makes it one of the most security-sensitive and technically loaded subsystems in the stack. When Rust can survive that kind of pressure, it is no longer an abstract argument about memory safety. It is a credible option for hard kernel work.

The downstream ripple is just as important. Canonical has said Ubuntu 26.04 Resolute Raccoon is targeting Linux kernel 6.20, while the upstream community signaled that Linus Torvalds might bump the major version to 7.x after 6.19. Ubuntu 26.04 LTS is scheduled for April 2026 and carries 10 years of support, so the Rust decision will land in the hands of millions of users through packaged kernels even if most of them never compile one themselves. Rust in Linux is past the proving phase now. It has entered the support matrix.