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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2016-09-19 16:17:57 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2016-09-21 10:09:14 +0200
commit63c43787d35e45562a6b5927e2edc8f4783d95b8 (patch)
tree2f16ef080b7a0b9fdd43915a33fd6ab2557eca2f /net/ipv6/ip6_vti.c
parentb588479358ce26f32138e0f0a7ab0678f8e3e601 (diff)
downloadlinux-63c43787d35e45562a6b5927e2edc8f4783d95b8.tar.bz2
vti6: fix input path
Since commit 1625f4529957, vti6 is broken, all input packets are dropped (LINUX_MIB_XFRMINNOSTATES is incremented). XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6 is set by vti6_rcv() before calling xfrm6_rcv()/xfrm6_rcv_spi(), thus we cannot set to NULL that value in xfrm6_rcv_spi(). A new function xfrm6_rcv_tnl() that enables to pass a value to xfrm6_rcv_spi() is added, so that xfrm6_rcv() is not touched (this function is used in several handlers). CC: Alexey Kodanev <alexey.kodanev@oracle.com> Fixes: 1625f4529957 ("net/xfrm_input: fix possible NULL deref of tunnel.ip6->parms.i_key") Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/ip6_vti.c')
-rw-r--r--net/ipv6/ip6_vti.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 52a2f735881f..5bd3afdcc771 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -321,11 +321,9 @@ static int vti6_rcv(struct sk_buff *skb)
goto discard;
}
- XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6 = t;
-
rcu_read_unlock();
- return xfrm6_rcv(skb);
+ return xfrm6_rcv_tnl(skb, t);
}
rcu_read_unlock();
return -EINVAL;