netdev - Re: [PATCH net 0/4] tcp: make sack processing more robust

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Date:   Mon, 17 Jun 2019 10:41:21 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com,
        gregkh@...uxfoundation.org, jtl@...flix.com, ncardwell@...gle.com,
        tyhicks@...onical.com, ycheng@...gle.com, brucec@...flix.com,
        jonathan.lemon@...il.com
Subject: Re: [PATCH net 0/4] tcp: make sack processing more robust

From: Eric Dumazet <edumazet@...gle.com>
Date: Mon, 17 Jun 2019 10:03:50 -0700

> Jonathan Looney brought to our attention multiple problems
> in TCP stack at the sender side.
> 
> SACK processing can be abused by malicious peers to either
> cause overflows, or increase of memory usage.
> 
> First two patches fix the immediate problems.
> 
> Since the malicious peers abuse senders by advertizing a very
> small MSS in their SYN or SYNACK packet, the last two
> patches add a new sysctl so that admins can chose a higher
> limit for MSS clamping.

Series applied, thanks Eric.