netdev - Re: [PATCH] ipv6: gro: fix PV6_GRO

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 for Android: free password hash cracker in your pocket

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

Date:	Mon, 08 Oct 2012 15:41:48 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, herbert@...dor.apana.org.au
Subject: Re: [PATCH] ipv6: gro: fix PV6_GRO_CB(skb)->proto problem

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 08 Oct 2012 21:38:50 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> It seems IPV6_GRO_CB(skb)->proto can be destroyed in skb_gro_receive()
> if a new skb is allocated (to serve as an anchor for frag_list)
> 
> We copy NAPI_GRO_CB() only (not the IPV6 specific part) in :
> 
> *NAPI_GRO_CB(nskb) = *NAPI_GRO_CB(p);
> 
> So we leave IPV6_GRO_CB(nskb)->proto to 0 (fresh skb allocation) instead
> of IPPROTO_TCP (6)
> 
> ipv6_gro_complete() isnt able to call ops->gro_complete()
> [ tcp6_gro_complete() ]
> 
> Fix this by moving proto in NAPI_GRO_CB() and getting rid of
> IPV6_GRO_CB
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Herbert Xu <herbert@...dor.apana.org.au>

Applied and queued up for -stable, thanks Eric.
--
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