On Thu, 14 Jan 2021 21:26:28 +0100 Andrea Parri (Microsoft) wrote:
> 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.  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.
> 
> Reported-by: Juan Vazquez <[email protected]>
> Signed-off-by: Andrea Parri (Microsoft) <[email protected]>
> Cc: "David S. Miller" <[email protected]>
> Cc: Jakub Kicinski <[email protected]>
> Cc: Alexei Starovoitov <[email protected]>
> Cc: Daniel Borkmann <[email protected]>
> Cc: Andrii Nakryiko <[email protected]>
> Cc: Martin KaFai Lau <[email protected]>
> Cc: Song Liu <[email protected]>
> Cc: Yonghong Song <[email protected]>
> Cc: John Fastabend <[email protected]>
> Cc: KP Singh <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> ---
> Applies to 5.11-rc3 (and hyperv-next).

So this is for hyperv-next or should we take it via netdev trees?

> Changes since v1 (Juan Vazquez):
>   - Improve validation in rndis_set_link_state() and rndis_get_ppi()
>   - Remove memory/skb leak in netvsc_alloc_recv_skb()

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