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Open Source and information security mailing list archives
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Date: Fri, 15 Jan 2021 20:30:22 -0800 From: Jakub Kicinski <kuba@...nel.org> To: "Andrea Parri (Microsoft)" <parri.andrea@...il.com> 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 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? > 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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