netdev - Re: [PATCH net] macsec: avoid heap overflow in skb_to

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Message-ID: <CAHmME9rxdTEe1-5ApgUhdkqiJztSgJb0QuhV2uSemobeXm_oNg@mail.gmail.com>
Date:   Tue, 25 Apr 2017 17:39:09 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Sabrina Dubroca <sd@...asysnail.net>
Cc:     Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net] macsec: avoid heap overflow in skb_to_sgvec on receive

Hi Sabrina,

I think I may have beaten you to the punch here by a few minutes. :)

The difference between our two versions is that you don't re-add the
FRAGLIST attribute, whereas my patch does, and then it does the
dynamic allocation. I suspect this might be a bit more robust. It also
ensures that skb_cow_data is called on both paths. So perhaps let's
roll with mine?

Jason