v1.16.2 v1.17.0
medium risk
abhinavxd/libredeskSep 10, 2026 → Sep 10, 20260 days between releases
What's New
Adds 6.18 kernels, AWS Graviton5, and transparent huge pages support while fixing vsock and virtio-mem bugs.
New Features
- Support for 6.18 microVM guest kernels
- Support for AWS Graviton5 instances
- Transparent huge pages support
- Support for booting bzImage guest kernels on x86_64
- New metrics options (emit_id, properties)
Improvements
- Alleviates guest performance regression on host kernels 6.3..6.10
Bug Fixes
- Fixed vsock device permanently suppressing RX delivery after pause/resume
- Fixed virtio-mem leaving memory writable or unmapped when restored from snapshots
- Fixed memory hotplug sizes silently wrapping when converted from MiB to bytes
Upgrade Notes
Ensure compatibility with the snapshot format introduced in v1.16.2. The snapshot load API now accepts a huge_pages field, and metrics can be configured with new emit_id or properties options.
The Two Releases
v1.16.2
Firecracker v1.16.2
Sep 10, 2026· 1 month ago
Contains bug fixes for vsock and virtio-mem, plus a snapshot format version bump that introduces compatibility issues.
Full release notesv1.17.0
Firecracker v1.17.0
Sep 10, 2026· 1 month ago
Adds support for new guest kernels, AWS hardware, and enhanced metrics/snapshotting capabilities while fixing vsock and virtio-mem bugs.
Full release notes