v1.14.2

firecracker-microvm/firecrackerv1.14.2Feb 27, 2026by Manciukic

AI Summary

Firecracker v1.14.2 is a bug fix release addressing two critical issues: a possible ENXIO error during file operations with FIFO files without active readers, and memory file corruption in differential snapshots for VMs with multiple memory slots (affecting VMs using memory hot-plugging or x86 VMs with memory larger than 3GiB).

Key Highlights

Fixed ENXIO error when opening FIFO files without active readers
Fixed differential snapshot memory corruption for VMs with multiple memory slots
Addresses issues with memory hot-plugging and large x86 VMs

Full Release Notes

**Fixed**

* [#5698](https://github.com/firecracker-microvm/firecracker/pull/5698): Fixed the possible ENXIO error which could occur during file open operation if the underlying file is FIFO without active readers already attached.
* [#5705](https://github.com/firecracker-microvm/firecracker/pull/5705): Fixed a bug that caused Firecracker to corrupt the memory files of differential snapshots for VMs with multiple memory slots. This affected VMs using memory hot-plugging or any x86 VMs with a memory size larger than 3GiB.