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

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Message-ID: <F4F2AD0F-BF6D-4838-83F3-E13FA6AECF49@fb.com>
Date:   Tue, 28 Jul 2020 06:15:26 +0000
From:   Song Liu <songliubraving@...com>
To:     Björn Töpel <bjorn.topel@...il.com>
CC:     Peilin Ye <yepeilin.cs@...il.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>,
        Arnd Bergmann <arnd@...db.de>,
        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 Lau <kafai@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        KP Singh <kpsingh@...omium.org>,
        "linux-kernel-mentees@...ts.linuxfoundation.org" 
        <linux-kernel-mentees@...ts.linuxfoundation.org>,
        Netdev <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Linux-kernel-mentees] [PATCH net v2] xdp: Prevent
 kernel-infoleak in xsk_getsockopt()



> On Jul 27, 2020, at 11:13 PM, Björn Töpel <bjorn.topel@...il.com> wrote:
> 
> On Tue, 28 Jul 2020 at 07:37, 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: Björn Töpel <bjorn.topel@...el.com>

Acked-by: Song Liu <songliubraving@...com>

[...]