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Michal Kubecek 21ee543edc xfrm: fix race between netns cleanup and state expire notification 
The xfrm_user module registers its pernet init/exit after xfrm
itself so that its net exit function xfrm_user_net_exit() is
executed before xfrm_net_exit() which calls xfrm_state_fini() to
cleanup the SA's (xfrm states). This opens a window between
zeroing net->xfrm.nlsk pointer and deleting all xfrm_state
instances which may access it (via the timer). If an xfrm state
expires in this window, xfrm_exp_state_notify() will pass null
pointer as socket to nlmsg_multicast().

As the notifications are called inside rcu_read_lock() block, it
is sufficient to retrieve the nlsk socket with rcu_dereference()
and check the it for null.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-03 16:07:44 -07:00
..
9p A bunch of updates and cleanup within the transport layer, 2014-04-11 14:14:57 -07:00
802 neigh: use NEIGH_VAR_INIT in ndo_neigh_setup functions. 2014-01-16 11:31:58 -08:00
8021q vlan: Fix lockdep warning with stacked vlan devices. 2014-05-16 22:14:49 -04:00
appletalk appletalk: fix checkpatch error with indent 2014-02-14 16:18:32 -05:00
atm net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
ax25 net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
batman-adv batman-adv: fix NULL pointer dereferences 2014-05-31 10:07:14 +02:00
bluetooth Bluetooth: Fix L2CAP LE debugfs entries permissions 2014-05-14 09:07:07 -07:00
bridge bridge: Prevent insertion of FDB entry with disallowed vlan 2014-06-02 13:38:23 -07:00
caif net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
can net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
ceph crush: decode and initialize chooseleaf_vary_r 2014-05-16 21:29:55 +04:00
core net: filter: fix possible memory leak in __sk_prepare_filter() 2014-06-02 17:49:45 -07:00
dcb net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
dccp ipv4: add a sock pointer to ip_queue_xmit() 2014-04-15 12:58:34 -04:00
decnet net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
dns_resolver net/*: Fix FSF address in file headers 2013-12-06 12:37:57 -05:00
dsa net/dsa/dsa.c: increment chip_index during of_node handling on dsa_of_probe() 2014-05-16 16:56:33 -04:00
ethernet net: eth_type_trans() should use skb_header_pointer() 2014-01-16 15:30:31 -08:00
hsr hsr: replace del_timer by del_timer_sync 2014-03-27 15:28:06 -04:00
ieee802154 mac802154: make csma/cca parameters per-wpan 2014-04-01 16:25:51 -04:00
ipv4 tcp: fix cwnd undo on DSACK in F-RTO 2014-06-02 16:50:49 -07:00
ipv6 net: fix inet_getid() and ipv6_select_ident() bugs 2014-06-02 14:09:28 -07:00
ipx ipx: implement shutdown() 2014-02-12 19:26:32 -05:00
irda net: add build-time checks for msg->msg_name size 2014-01-18 23:04:16 -08:00
iucv af_iucv: wrong mapping of sent and confirmed skbs 2014-05-14 15:38:39 -04:00
key net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
l2tp ipv4: add a sock pointer to ip_queue_xmit() 2014-04-15 12:58:34 -04:00
lapb net/lapb: re-send packets on timeout 2013-09-23 16:52:45 -04:00
llc llc: remove noisy WARN from llc_mac_hdr_init 2014-01-28 18:01:32 -08:00
mac80211 mac80211: fix on-channel remain-on-channel 2014-05-14 15:48:38 +02:00
mac802154 mac802154: fix duplicate #include headers 2014-04-07 13:18:44 -04:00
mpls ipip: add GSO/TSO support 2013-10-19 19:36:19 -04:00
netfilter ipvs: Fix panic due to non-linear skb 2014-05-26 10:22:46 +09:00
netlabel netlabel: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
netlink netlink: Only check file credentials for implicit destinations 2014-06-02 16:34:09 -07:00
netrom net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
nfc net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
openvswitch ipv4: add a sock pointer to dst->output() path. 2014-04-15 13:47:15 -04:00
packet net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
phonet net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
rds net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
rfkill net: rfkill: move poll work to power efficient workqueue 2014-02-04 21:58:16 +01:00
rose net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
rxrpc af_rxrpc: Fix XDR length check in rxrpc key demarshalling. 2014-05-16 15:24:47 -04:00
sched net_sched: fix an oops in tcindex filter 2014-05-21 16:47:13 -04:00
sctp net: sctp: Don't transition to PF state when transport has exhausted 'Path.Max.Retrans'. 2014-04-27 23:41:14 -04:00
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-04-12 17:31:22 -07:00
tipc net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
unix net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
vmw_vsock vsock: Make transport the proto owner 2014-05-05 13:13:50 -04:00
wimax wimax: remove dead code 2013-11-21 13:09:42 -05:00
wireless cfg80211: add cfg80211_sched_scan_stopped_rtnl 2014-05-05 15:14:57 +02:00
x25 net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
xfrm xfrm: fix race between netns cleanup and state expire notification 2014-06-03 16:07:44 -07:00
compat.c net/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types 2014-03-06 16:30:45 +01:00
Kconfig Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2014-04-03 13:05:42 -07:00
Makefile net: move 6lowpan compression code to separate module 2014-01-15 15:36:38 -08:00
nonet.c
socket.c net: use SYSCALL_DEFINEx for sys_recv 2014-04-16 15:15:05 -04:00
sysctl_net.c net: Update the sysctl permissions handler to test effective uid/gid 2013-10-07 15:57:56 -04:00