On Thu, 14 Aug 2025 17:37:02 +0200, Paolo Abeni wrote:
> The linux kernel implementation for the virtio_net driver recently
> gained support for virtio features above the 64th bit.
>
> It relies on the hypervisor to clear the features data for unknown /
> unsupported features range.
>
> The current pci-modern implementation, in such scenario, leaves the
> data memory untouched, which causes the guest kernel assuming "random"
> features are supported (and possibly leaks host memory contents).
>
> [...]
Applied to kvmtool (master), thanks!
[1/1] virtio/pci: explicit zero unknown devices features
https://git.kernel.org/will/kvmtool/c/c4e9b3a8de7f
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
