linux-kernel - Re: [Linux-kernel-mentees] [PATCH net v2] xdp: Prevent kernel-infoleak in xsk

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Message-ID: <CAK8P3a2_61F2OT3FkNF4zTdmQ+VtdGkr+dWu1SuL+q6YbN-Ytw@mail.gmail.com>
Date:   Tue, 28 Jul 2020 09:34:54 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Peilin Ye <yepeilin.cs@...il.com>
Cc:     Song Liu <songliubraving@...com>,
        Björn Töpel <bjorn.topel@...el.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Martin KaFai Lau <kafai@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        KP Singh <kpsingh@...omium.org>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Linux-kernel-mentees] [PATCH net v2] xdp: Prevent
 kernel-infoleak in xsk_getsockopt()

On Tue, Jul 28, 2020 at 7:37 AM Peilin Ye <yepeilin.cs@...il.com> wrote:
>
> xsk_getsockopt() is copying uninitialized stack memory to userspace when
> `extra_stats` is `false`. Fix it.
>
> Fixes: 8aa5a33578e9 ("xsk: Add new statistics")
> Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Peilin Ye <yepeilin.cs@...il.com>

Acked-by: Arnd Bergmann <arnd@...db.de>