Kernels

Pre-built Linux kernels tuned for the Substrate hypervisor. Click any row to download.

LATEST · MAINLINE linux-6.18.39 released Jul 21, 2026

The latest mainline Linux kernel, pre-built and tuned for Substrate microVMs — monolithic, virtio-only, and reproducible. Pick an architecture below to download.

x86_64:80b2…02a3aarch64:2e55…a474

x86_64 aarch64

VERSION CHANNEL ARCH SIZE BUILT SHA256

Mainline · 6.18 latest mainline kernel

linux-6.18.39 NEW base x86_64 18.9 MB Jul 21, 2026 80b2…02a3 .kernel

linux-6.18.39 NEW base aarch64 20.8 MB Jul 21, 2026 2e55…a474 .kernel

linux-6.18.39 NEW debug x86_64 26.7 MB Jul 21, 2026 99f0…9084 .kernel

linux-6.18.39 NEW debug aarch64 26.5 MB Jul 21, 2026 4072…2aff .kernel

LTS · 6.12 long-term support · security backports

linux-6.12.96 NEW base x86_64 18.8 MB Jul 21, 2026 66a0…ecb0 .kernel

linux-6.12.96 NEW base aarch64 20.4 MB Jul 21, 2026 82f9…e5c8 .kernel

linux-6.12.96 NEW debug x86_64 26.6 MB Jul 21, 2026 ecda…1bfc .kernel

linux-6.12.96 NEW debug aarch64 25.9 MB Jul 21, 2026 c368…e134 .kernel

linux-6.12.91 base x86_64 18.8 MB Jul 6, 2026 0d71…0c1c .kernel

linux-6.12.91 base aarch64 20.4 MB Jul 6, 2026 7bf5…2bb3 .kernel

linux-6.12.91 debug x86_64 26.6 MB Jul 6, 2026 d37c…d1a9 .kernel

linux-6.12.91 debug aarch64 26.0 MB Jul 6, 2026 5885…162d .kernel

All kernels are reproducibly built. Source open at github.com/agx-runtime/substrate-kernels.

source build pipeline release notes