netdev - Re: [PATCH next v4 1/6] bonding: Verify RX LACPDU has proper dest mac-addr

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 18 Feb 2015 13:58:28 +0100
From:	Nikolay Aleksandrov <nikolay@...hat.com>
To:	Mahesh Bandewar <maheshb@...gle.com>,
	Jay Vosburgh <j.vosburgh@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	Veaceslav Falico <vfalico@...il.com>,
	David Miller <davem@...emloft.net>
CC:	Maciej Zenczykowski <maze@...gle.com>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH next v4 1/6] bonding: Verify RX LACPDU has proper dest
 mac-addr

On 02/18/2015 08:17 AM, Mahesh Bandewar wrote:
> The 802.1AX standard states:
> "The DA in LACPDUs is the Slow_Protocols_Multicast address."
> 
> This patch enforces that and drops LACPDUs with destination MAC
> addresses other than Slow_Protocols_Multicast address
> 
> Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>
> ---
> v1:
>    Initial version
> v2-v4:
>    Rebase
> 
>  drivers/net/bonding/bond_3ad.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
> index cfc4a9c1000a..9b436696b95e 100644
> --- a/drivers/net/bonding/bond_3ad.c
> +++ b/drivers/net/bonding/bond_3ad.c
> @@ -2485,6 +2485,9 @@ int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
>  	if (skb->protocol != PKT_TYPE_LACPDU)
>  		return RX_HANDLER_ANOTHER;
>  
> +	if (!MAC_ADDRESS_EQUAL(eth_hdr(skb)->h_dest, lacpdu_mcast_addr))
> +		return RX_HANDLER_ANOTHER;
> +
>  	lacpdu = skb_header_pointer(skb, 0, sizeof(_lacpdu), &_lacpdu);
>  	if (!lacpdu)
>  		return RX_HANDLER_ANOTHER;
> 

Reviewed-by: Nikolay Aleksandrov <nikolay@...hat.com>
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html