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SubjectRe: [PATCH] hv_netvsc: Add validation for untrusted Hyper-V values
From: Andres Beltran <>
Date: Tue, 28 Jul 2020 18:53:21 -0400

> For additional robustness in the face of Hyper-V errors or malicious
> behavior, validate all values that originate from packets that Hyper-V
> has sent to the guest in the host-to-guest ring buffer. Ensure that
> invalid values cannot cause indexing off the end of an array, or
> subvert an existing validation via integer overflow. Ensure that
> outgoing packets do not have any leftover guest memory that has not
> been zeroed out.
> Cc: David S. Miller <>
> Cc: Jakub Kicinski <>
> Cc:
> Signed-off-by: Andres Beltran <>

I need hyperv maintainer reviews before I will apply this.

Thank you.

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