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Date: Sat, 16 Jan 2021 14:02:01 +0100 From: Andrea Parri <parri.andrea@...il.com> To: Jakub Kicinski <kuba@...nel.org> Cc: linux-kernel@...r.kernel.org, "K . Y . Srinivasan" <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Stephen Hemminger <sthemmin@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Michael Kelley <mikelley@...rosoft.com>, Saruhan Karademir <skarade@...rosoft.com>, Juan Vazquez <juvazq@...rosoft.com>, linux-hyperv@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>, John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org, bpf@...r.kernel.org Subject: Re: [PATCH v2] hv_netvsc: Add (more) validation for untrusted Hyper-V values On Fri, Jan 15, 2021 at 08:30:22PM -0800, Jakub Kicinski wrote: > 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 <juvazq@...rosoft.com> > > Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@...il.com> > > Cc: "David S. Miller" <davem@...emloft.net> > > Cc: Jakub Kicinski <kuba@...nel.org> > > Cc: Alexei Starovoitov <ast@...nel.org> > > Cc: Daniel Borkmann <daniel@...earbox.net> > > Cc: Andrii Nakryiko <andrii@...nel.org> > > Cc: Martin KaFai Lau <kafai@...com> > > Cc: Song Liu <songliubraving@...com> > > Cc: Yonghong Song <yhs@...com> > > Cc: John Fastabend <john.fastabend@...il.com> > > Cc: KP Singh <kpsingh@...nel.org> > > Cc: netdev@...r.kernel.org > > Cc: bpf@...r.kernel.org > > --- > > Applies to 5.11-rc3 (and hyperv-next). > > So this is for hyperv-next or should we take it via netdev trees? No preference, either way is good for me. Thanks, Andrea
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