content: blog: Release v49.0

content/en/blog/v49.0/index.md

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+---
+title: "Cloud Hypervisor v49.0 Released!"
+date: 2025-11-09T05:36:56Z
+draft: false
+contributors: [Cloud Hypervisor Team]
+---
+This release has been tracked in [v49.0 group](https://github.com/orgs/cloud-hypervisor/projects/6/views/4?filterQuery=release%3A%22Release+49%22) of our [roadmap project](https://github.com/orgs/cloud-hypervisor/projects/6/).
+
+### MSHV Support Improvements
+
+On AArch64 with MSHV, firmware boot (#7391) and graceful guest shutdown
+(#7354) are now supported, and CI coverage has been added (#7381).
+
+### Logging Improvements
+
+Logs now use an improved timestamp format (#7355), emit an explicit
+message on graceful shutdown (#7346), and reduce noisy warnings with
+newer guest kernels (#7423).
+
+### Removed Default IP and Mask for `virtio-net` Devices
+
+The implicit default IP (192.168.249.1) and netmask (255.255.255.0) for
+`virtio-net` devices have been removed, as previously announced in the
+deprecation notice two releases ago (#7365).  Users now can create
+`virtio-net` devices with no IP and netmask assigned.
+
+### Notable Bug Fixes
+
+* Prevent crash on malformed vsock connect requests (#7310)
+* Drop the VFIO container when no VFIO devices are active (#7364)
+* Gracefully close preserved file descriptors on hot device removal (#7371)
+* Fix race condition in pause–resume cycles (#7397)
+* Add NetConfig offload parameters to the OpenAPI spec file (#7445)
+* Fix seccomp filter violation from the http-server thread (#7454)
+
+### Contributors
+
+Many thanks to everyone who has contributed to our release:
+
+* Aastha Rawat <aastharawat@microsoft.com>
+* Alyssa Ross <hi@alyssa.is>
+* Anirudh Rayabharam <anrayabh@microsoft.com>
+* Ariel Chenet <apchenet@gmail.com>
+* Bo Chen <bchen@crusoe.ai>
+* Can Zhang <icloud9957@gmail.com>
+* Eugene Korenevsky <ekorenevsky@aliyun.com>
+* Maximilian Güntner <code@mguentner.de>
+* Muminul Islam <muislam@microsoft.com>
+* Oliver Anderson <oliver.anderson@cyberus-technology.de>
+* Philipp Schuster <philipp.schuster@cyberus-technology.de>
+* Rob Bradford <rbradford@rivosinc.com>
+* Ruoqing He <heruoqing@iscas.ac.cn>
+* Wei Liu <liuwe@microsoft.com>
+* Yi Wang <foxywang@tencent.com>
+### Download
+ See the <a href="https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v49.0">GitHub Release</a> for the release assets.