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ipv6: drop frames with attached skb->sk in forwarding

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This is a clone of commit 2ab957492d ("ip_forward: Drop frames with
attached skb->sk") for ipv6.

This commit has exactly the same reasons as the above mentioned commit,
namely to prevent panics during netfilter reload or a misconfigured stack.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa 2015-10-08 18:19:53 +02:00 committed by David S. Miller
parent d9e4ce65b2
commit 9ef2e965e5
1 changed files with 3 additions and 0 deletions
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3
net/ipv6/ip6_output.c
View file

@ -376,6 +376,9 @@ int ip6_forward(struct sk_buff *skb)
if (skb->pkt_type != PACKET_HOST)
goto drop;
if (unlikely(skb->sk))
goto drop;
if (skb_warn_if_lro(skb))
goto drop;