linux-kernel - Re: [PATCH] ipv6: Prevent overrun when parsing v6 header options

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Message-ID: <56a41977-6f9e-08dd-e4e2-07207324d536@gmail.com>
Date:   Fri, 31 May 2019 08:57:41 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        Eric Dumazet <eric.dumazet@...il.com>
Cc:     Young Xiao <92siuyang@...il.com>, davem@...emloft.net,
        kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Steffen Klassert <steffen.klassert@...unet.com>
Subject: Re: [PATCH] ipv6: Prevent overrun when parsing v6 header options



On 5/31/19 7:54 AM, Herbert Xu wrote:
> On Fri, May 31, 2019 at 07:50:06AM -0700, Eric Dumazet wrote:
>>
>> What do you mean by should ?
>>
>> Are they currently already linearized before the function is called,
>> or is it missing and a bug needs to be fixed ?
> 
> AFAICS this is the code-path for locally generated outbound packets.
> Under what circumstances can the IPv6 header be not in the head?
> 
>

I guess this means we had yet another random submission from Young Xiao :/

Thanks.