hannes@stressinduktion.org f60e5990d9 ipv6: protect skb->sk accesses from recursive dereference inside the stack ... We should not consult skb->sk for output decisions in xmit recursion levels > 0 in the stack. Otherwise local socket settings could influence the result of e.g. tunnel encapsulation process. ipv6 does not conform with this in three places: 1) ip6_fragment: we do consult ipv6_npinfo for frag_size 2) sk_mc_loop in ipv6 uses skb->sk and checks if we should loop the packet back to the local socket 3) ip6_skb_dst_mtu could query the settings from the user socket and force a wrong MTU Furthermore: In sk_mc_loop we could potentially land in WARN_ON(1) if we use a PF_PACKET socket ontop of an IPv6-backed vxlan device. Reuse xmit_recursion as we are currently only interested in protecting tunnel devices. Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-04-06 16:12:49 -04:00
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netfilter
addrconf_core.c
addrconf.c
addrlabel.c
af_inet6.c
ah6.c
anycast.c
datagram.c
esp6.c
exthdrs_core.c
exthdrs_offload.c
exthdrs.c
fib6_rules.c	net: move fib_rules_unregister() under rtnl lock	2015-04-02 20:52:34 -04:00
icmp.c
inet6_connection_sock.c
inet6_hashtables.c
ip6_checksum.c
ip6_fib.c
ip6_flowlabel.c
ip6_gre.c
ip6_icmp.c
ip6_input.c
ip6_offload.c
ip6_offload.h
ip6_output.c	ipv6: protect skb->sk accesses from recursive dereference inside the stack	2015-04-06 16:12:49 -04:00
ip6_tunnel.c
ip6_udp_tunnel.c
ip6_vti.c
ip6mr.c	ip6mr: call del_timer_sync() in ip6mr_free_table()	2015-04-02 20:52:35 -04:00
ipcomp6.c
ipv6_sockglue.c
Kconfig
Makefile
mcast.c
mip6.c
ndisc.c
netfilter.c
output_core.c
ping.c
proc.c
protocol.c
raw.c
reassembly.c
route.c
sit.c
syncookies.c
sysctl_net_ipv6.c
tcp_ipv6.c	net: tcp6: fix double call of tcp_v6_fill_cb()	2015-03-29 13:36:05 -07:00
tcpv6_offload.c
tunnel6.c
udp_impl.h
udp_offload.c
udp.c
udplite.c
xfrm6_input.c
xfrm6_mode_beet.c
xfrm6_mode_ro.c
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c
xfrm6_output.c
xfrm6_policy.c
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c