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authorHannes Frederic Sowa <hannes@stressinduktion.org>2015-10-08 18:19:53 +0200
committerDavid S. Miller <davem@davemloft.net>2015-10-11 05:30:44 -0700
commit9ef2e965e55481a52d6d91ce61977a27836268d3 (patch)
tree95d5caad57531ee5a4b9847c25b586fe2b91a6ca /net/ipv6/ip6_output.c
parentd9e4ce65b27694b0b70ff4d1cbbb740195fd916b (diff)
downloadlinux-sh-9ef2e965e55481a52d6d91ce61977a27836268d3.tar.gz
ipv6: drop frames with attached skb->sk in forwarding
This is a clone of commit 2ab957492d13b ("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>
Diffstat (limited to 'net/ipv6/ip6_output.c')
-rw-r--r--net/ipv6/ip6_output.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 92b1aa38f121..61d403ee1031 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -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;