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

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Message-Id: <20201228.150338.187303639465700771.davem@davemloft.net>
Date:   Mon, 28 Dec 2020 15:03:38 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     bodefang@....com
Cc:     kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org, kuba@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipv6: Prevent overrun when parsing v6 header options

From: Defang Bo <bodefang@....com>
Date: Sun, 27 Dec 2020 22:11:35 +0800

> Similar to commit<2423496af35>, the fragmentation code tries to parse the header options in order
> to figure out where to insert the fragment option.  Since nexthdr points
> to an invalid option, the calculation of the size of the network header
> can made to be much larger than the linear section of the skb and data
> is read outside of it.
> 
> Signed-off-by: Defang Bo <bodefang@....com>

Could you please repost this with a proper Fixes: tag, thank you.