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From: Jan Beulich <jbeulich@suse.com>
To: Juergen Gross <jgross@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	xen-devel@lists.xenproject.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/4] xen/netfront: don't read data from request on the ring page
Date: Tue, 24 Aug 2021 17:24:30 +0200	[thread overview]
Message-ID: <9ca2d6a2-03a5-ff4e-8d20-dfad9cd14e4f@suse.com> (raw)
In-Reply-To: <20210824102809.26370-3-jgross@suse.com>

On 24.08.2021 12:28, Juergen Gross wrote:
> In order to avoid a malicious backend being able to influence the local
> processing of a request build the request locally first and then copy
> it to the ring page. Any reading from the request influencing the
> processing in the frontend needs to be done on the local instance.
> 
> Signed-off-by: Juergen Gross <jgross@suse.com>

Reviewed-by: Jan Beulich <jbeulich@suse.com>


  reply	other threads:[~2021-08-24 15:24 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-24 10:28 [PATCH v2 0/4] xen: harden netfront against malicious backends Juergen Gross
2021-08-24 10:28 ` [PATCH v2 1/4] xen/netfront: read response from backend only once Juergen Gross
2021-08-24 10:28 ` [PATCH v2 2/4] xen/netfront: don't read data from request on the ring page Juergen Gross
2021-08-24 15:24   ` Jan Beulich [this message]
2021-08-24 10:28 ` [PATCH v2 3/4] xen/netfront: disentangle tx_skb_freelist Juergen Gross
2021-08-24 10:28 ` [PATCH v2 4/4] xen/netfront: don't trust the backend response data blindly Juergen Gross
2021-08-24 15:31   ` Jan Beulich
2021-08-24 15:33 ` [PATCH v2 0/4] xen: harden netfront against malicious backends Jan Beulich
2021-09-10 10:19   ` Marek Marczykowski-Górecki
2021-09-10 11:10     ` Juergen Gross
2021-08-25 10:00 ` patchwork-bot+netdevbpf

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