Eric Dumazet 97599dc792 net: drop dst before queueing fragments ... Commit 4a94445c9a (net: Use ip_route_input_noref() in input path) added a bug in IP defragmentation handling, as non refcounted dst could escape an RCU protected section. Commit 64f3b9e203 (net: ip_expire() must revalidate route) fixed the case of timeouts, but not the general problem. Tom Parkin noticed crashes in UDP stack and provided a patch, but further analysis permitted us to pinpoint the root cause. Before queueing a packet into a frag list, we must drop its dst, as this dst has limited lifetime (RCU protected) When/if a packet is finally reassembled, we use the dst of the very last skb, still protected by RCU and valid, as the dst of the reassembled packet. Use same logic in IPv6, as there is no need to hold dst references. Reported-by: Tom Parkin <tparkin@katalix.com> Tested-by: Tom Parkin <tparkin@katalix.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-04-17 01:15:29 -04:00
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9p	Revert parts of "hlist: drop the node parameter from iterators"	2013-03-08 15:05:34 -08:00
802	net/802/mrp: fix possible race condition when calling mrp_pdu_queue()	2013-04-12 15:10:48 -04:00
8021q	8021q: fix a potential use-after-free	2013-03-24 17:27:28 -04:00
appletalk	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
atm	atm: update msg_namelen in vcc_recvmsg()	2013-04-07 16:28:00 -04:00
ax25	ax25: fix info leak via msg_name in ax25_recvmsg()	2013-04-07 16:28:00 -04:00
batman-adv	batman-adv: verify tt len does not exceed packet len	2013-03-11 22:59:47 +01:00
bluetooth	Bluetooth: SCO - Fix missing msg_namelen update in sco_sock_recvmsg()	2013-04-07 16:28:01 -04:00
bridge	bridge: make user modified path cost sticky	2013-04-15 14:03:44 -04:00
caif	caif: Fix missing msg_namelen update in caif_seqpkt_recvmsg()	2013-04-07 16:28:01 -04:00
can	can: gw: use kmem_cache_free() instead of kfree()	2013-04-09 09:58:44 +02:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2013-03-12 09:22:42 -07:00
core	rtnetlink: Call nlmsg_parse() with correct header length	2013-04-08 17:12:26 -04:00
dcb	dcbnl: fix various netlink info leaks	2013-03-10 05:19:26 -04:00
dccp	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
decnet	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
dns_resolver	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2012-12-16 15:40:50 -08:00
dsa	dsa: make dsa_switch_setup check for valid port names	2013-01-21 15:40:12 -05:00
ethernet	net: split eth_mac_addr for better error handling	2013-01-21 14:07:44 -05:00
ieee802154	6lowpan: Fix endianness issue in is_addr_link_local().	2013-03-10 16:49:35 -04:00
ipv4	net: drop dst before queueing fragments	2013-04-17 01:15:29 -04:00
ipv6	net: drop dst before queueing fragments	2013-04-17 01:15:29 -04:00
ipx	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
irda	irda: Fix missing msg_namelen update in irda_recvmsg_dgram()	2013-04-07 16:28:01 -04:00
iucv	af_iucv: fix recvmsg by replacing skb_pull() function	2013-04-08 17:16:57 -04:00
key	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2013-03-27 14:07:04 -04:00
l2tp	l2tp: fix info leak in l2tp_ip6_recvmsg()	2013-04-07 16:28:01 -04:00
lapb	net/lapb: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:40:01 -08:00
llc	llc: Fix missing msg_namelen update in llc_ui_recvmsg()	2013-04-07 16:28:01 -04:00
mac80211	Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211	2013-04-01 15:09:28 -04:00
mac802154	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
netfilter	netfilter: nf_nat: fix race when unloading protocol modules	2013-04-12 11:46:31 +02:00
netlabel	netlabel: fix build problems when CONFIG_IPV6=n	2013-03-08 11:33:51 -05:00
netlink	genetlink: trigger BUG_ON if a group name is too long	2013-03-20 12:05:51 -04:00
netrom	netrom: fix invalid use of sizeof in nr_recvmsg()	2013-04-08 22:49:23 -04:00
nfc	NFC: llcp: fix info leaks via msg_name in llcp_sock_recvmsg()	2013-04-07 16:28:02 -04:00
openvswitch	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch	2013-03-15 09:00:39 -04:00
packet	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
phonet	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
rds	net/rds: zero last byte for strncpy	2013-03-08 00:35:44 -05:00
rfkill	rfkill: don't use [delayed_]work_pending()	2012-12-28 13:40:16 -08:00
rose	rose: fix info leak via msg_name in rose_recvmsg()	2013-04-07 16:28:02 -04:00
rxrpc	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
sched	cbq: incorrect processing of high limits	2013-04-02 14:29:20 -04:00
sctp	sctp: don't break the loop while meeting the active_path so as to find the matched transport	2013-03-13 10:09:55 -04:00
sunrpc	NFS client bugfixes for Linux 3.9	2013-04-10 09:00:51 -07:00
tipc	tipc: fix info leaks via msg_name in recv_msg/recv_stream	2013-04-07 16:28:02 -04:00
unix	af_unix: If we don't care about credentials coallesce all messages	2013-04-05 00:49:13 -04:00
vmw_vsock	VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg()	2013-04-07 16:28:02 -04:00
wimax	…
wireless	Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211	2013-04-03 14:19:48 -04:00
x25	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
xfrm	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2013-03-27 14:07:04 -04:00
Kconfig	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
Makefile	VSOCK: Introduce VM Sockets	2013-02-10 19:41:08 -05:00
compat.c	make get_file() return its argument	2012-09-26 21:10:25 -04:00
nonet.c	…
socket.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
sysctl_net.c	user_ns: get rid of duplicate code in net_ctl_permissions	2012-11-18 20:32:45 -05:00