Eric Dumazet b97a2f3d58 inet: switch IP ID generator to siphash ...

commit df453700e8d81b1bdafdf684365ee2b9431fb702 upstream.

According to Amit Klein and Benny Pinkas, IP ID generation is too weak
and might be used by attackers.

Even with recent net_hash_mix() fix (netns: provide pure entropy for net_hash_mix())
having 64bit key and Jenkins hash is risky.

It is time to switch to siphash and its 128bit keys.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Amit Klein <aksecurity@gmail.com>
Reported-by: Benny Pinkas <benny@pinkas.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 4.9: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-08-25 10:51:42 +02:00

..

conntrack.h

netfilter: remove ip_conntrack* sysctl compat code

2016-08-13 13:27:13 +02:00

core.h

…

dccp.h

…

generic.h

netns: remove BUG_ONs from net_generic()

2015-04-17 15:21:48 -04:00

hash.h

netns: provide pure entropy for net_hash_mix()

2019-04-17 08:36:46 +02:00

ieee802154_6lowpan.h

ieee802154: 6lowpan: ensure MTU of 1280 for 6lowpan

2014-08-19 19:17:42 +02:00

ipv4.h

inet: switch IP ID generator to siphash

2019-08-25 10:51:42 +02:00

ipv6.h

netfilter: ipv6: nf_defrag: reduce struct net memory waste

2018-08-24 13:12:26 +02:00

mib.h

…

mpls.h

mpls: Add a sysctl to control the size of the mpls label table

2015-03-04 00:26:06 -05:00

netfilter.h

netfilter: replace list_head with single linked list

2016-09-25 14:38:48 +02:00

nftables.h

netfilter: nf_tables: add netdev table to filter from ingress

2015-05-26 18:41:23 +02:00

packet.h

packet: fix broken build.

2012-08-23 09:29:45 -07:00

sctp.h

net: sctp: dynamically enable or disable pf state

2015-12-16 10:56:50 -05:00

unix.h

…

x_tables.h

netfilter: don't pull include/linux/netfilter.h from netns headers

2015-06-18 21:14:31 +02:00

xfrm.h

xfrm: state: remove per-netns gc task

2016-08-24 13:16:06 +02:00