netdev - Re: [PATCH net] net: ipv6: RTF_PCPU should not be settable from userspace

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAM_iQpUbuzie86Cf96Q9F53UiamJixr-aVkAKtgvZFtiKPngUw@mail.gmail.com>
Date:   Thu, 20 Apr 2017 15:39:28 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     David Ahern <dsa@...ulusnetworks.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Martin KaFai Lau <kafai@...com>,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: Re: [PATCH net] net: ipv6: RTF_PCPU should not be settable from userspace

On Wed, Apr 19, 2017 at 2:19 PM, David Ahern <dsa@...ulusnetworks.com> wrote:
>
> Fix by checking for the flag and failing with EINVAL.
>

I am still not sure about this. There are a few unused bits in
this flag, we simply ignore the rest, right? Why should we
reject this one instead of all of those we don't use?