netdev - Re: [PATCH net 0/7] sctp: enhancements for the verification tag

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Message-ID: <YXIXwWOkUYhazR4R@t14s.localdomain>
Date:   Thu, 21 Oct 2021 22:45:37 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Xin Long <lucien.xin@...il.com>
Cc:     network dev <netdev@...r.kernel.org>, davem@...emloft.net,
        kuba@...nel.org, linux-sctp@...r.kernel.org,
        michael.tuexen@...chi.franken.de
Subject: Re: [PATCH net 0/7] sctp: enhancements for the verification tag

On Wed, Oct 20, 2021 at 07:42:40AM -0400, Xin Long wrote:
> This patchset is to address CVE-2021-3772:
> 
>   A flaw was found in the Linux SCTP stack. A blind attacker may be able to
>   kill an existing SCTP association through invalid chunks if the attacker
>   knows the IP-addresses and port numbers being used and the attacker can
>   send packets with spoofed IP addresses.
> 
> This is caused by the missing VTAG verification for the received chunks
> and the incorrect vtag for the ABORT used to reply to these invalid
> chunks.
> 
> This patchset is to go over all processing functions for the received
> chunks and do:
> 
...
> 
> This patch series has been tested with SCTP TAHI testing to make sure no
> regression caused on protocol conformance.

Nice!

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>