Tom Herbert e557124023 kcm: Check if sk_user_data already set in kcm_attach ... This is needed to prevent sk_user_data being overwritten. The check is done under the callback lock. This should prevent a socket from being attached twice to a KCM mux. It also prevents a socket from being attached for other use cases of sk_user_data as long as the other cases set sk_user_data under the lock. Followup work is needed to unify all the use cases of sk_user_data to use the same locking. Reported-by: syzbot+114b15f2be420a8886c3@syzkaller.appspotmail.com Fixes: ab7ac4eb98 ("kcm: Kernel Connection Multiplexor module") Signed-off-by: Tom Herbert <tom@quantonium.net> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-01-24 15:54:30 -05:00
..
6lowpan	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
9p	9p: add missing module license for xen transport	2018-01-15 13:13:53 -05:00
802	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
8021q	8021q: fix a memory leak for VLAN 0 device	2018-01-10 15:31:07 -05:00
appletalk	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
atm	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
ax25	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
batman-adv	batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tq	2017-12-04 11:47:33 +01:00
bluetooth	Bluetooth: Prevent stack info leak from the EFS element.	2018-01-04 17:01:01 +01:00
bpf	bpf: add meta pointer for direct access	2017-09-26 13:36:44 -07:00
bridge	net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks	2017-12-18 13:29:01 -05:00
caif	caif_usb: use strlcpy() instead of strncpy()	2018-01-10 15:06:14 -05:00
can	can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once	2018-01-18 09:32:54 +01:00
ceph	We have a set of file locking improvements from Zheng, rbd rw/ro	2017-11-21 05:38:32 -10:00
core	net: qdisc_pkt_len_init() should be more robust	2018-01-22 16:00:05 -05:00
dcb	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
dccp	dccp: CVE-2017-8824: use-after-free in DCCP code	2017-12-05 18:08:53 -05:00
decnet	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
dns_resolver	KEYS: Fix race between updating and finding a negative key	2017-10-18 09:12:40 +01:00
dsa	net: remove duplicate includes	2017-12-13 13:18:46 -05:00
ethernet	networking: make skb_push & __skb_push return void pointers	2017-06-16 11:48:40 -04:00
hsr	net: hsr: Convert timers to use timer_setup()	2017-10-25 13:00:27 +09:00
ieee802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
ife	MAINTAINERS: Update Yotam's E-mail	2017-11-01 12:19:03 +09:00
ipv4	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2018-01-24 10:32:29 -05:00
ipv6	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2018-01-24 10:32:29 -05:00
ipx	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
iucv	iucv: Convert sk_wmem_alloc accesses to refcount_t.	2017-07-03 02:31:22 -07:00
kcm	kcm: Check if sk_user_data already set in kcm_attach	2018-01-24 15:54:30 -05:00
key	af_key: Fix memory leak in key_notify_policy.	2018-01-10 09:45:11 +01:00
l2tp	l2tp: exit_net cleanup check added	2017-11-14 15:45:53 +09:00
l3mdev
lapb	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
llc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-11-15 11:56:19 -08:00
mac80211	mac80211: mesh: drop frames appearing to be from us	2018-01-04 15:51:53 +01:00
mac802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
mpls	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
ncsi	treewide: setup_timer() -> timer_setup() (2 field)	2017-11-21 15:57:09 -08:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-01-08 20:21:39 -08:00
netlabel	net/netlabel: Add list_next_rcu() in rcu_dereference().	2017-11-18 10:32:41 +09:00
netlink	netlink: reset extack earlier in netlink_rcv_skb	2018-01-18 15:14:51 -05:00
netrom	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
nfc	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
nsh	openvswitch: enable NSH support	2017-11-08 16:12:33 +09:00
openvswitch	Revert "openvswitch: Add erspan tunnel support."	2018-01-15 14:33:16 -05:00
packet	net/packet: fix a race in packet_bind() and packet_notifier()	2017-11-28 11:13:30 -05:00
phonet	phonet: exit_net cleanup check added	2017-11-14 15:45:53 +09:00
psample	MAINTAINERS: Update Yotam's E-mail	2017-11-01 12:19:03 +09:00
qrtr	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-10 10:00:18 +09:00
rds	rds: tcp: compute m_ack_seq as offset from ->write_seq	2018-01-22 15:43:54 -05:00
rfkill	net: rfkill: gpio: Switch to devm_acpi_dev_add_driver_gpios()	2017-06-13 11:07:51 +02:00
rose	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
rxrpc	rxrpc: Use correct netns source in rxrpc_release_sock()	2017-12-03 10:05:20 -05:00
sched	net: sched: em_nbyte: don't add the data offset twice	2018-01-24 14:52:40 -05:00
sctp	gso: validate gso_type in GSO handlers	2018-01-22 16:01:30 -05:00
smc	net/smc: Fix preinitialization of buf_desc in __smc_buf_create()	2017-11-24 01:33:34 +09:00
strparser	strparser: Call sock_owned_by_user_nocheck	2017-12-28 14:28:22 -05:00
sunrpc	NFS client fixes for Linux 4.15-rc4	2017-12-16 13:12:53 -08:00
switchdev	net: bridge: Add/del switchdev object on host join/leave	2017-11-10 13:41:40 +09:00
tipc	tipc: fix a memory leak in tipc_nl_node_get_link()	2018-01-15 13:45:50 -05:00
tls	tls: Correct length of scatterlist in tls_sw_sendpage	2018-01-22 16:25:21 -05:00
unix	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
vmw_vsock	VSOCK: fix outdated sk_state value in hvs_release()	2017-12-05 15:07:37 -05:00
wimax	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
wireless	cfg80211: fix station info handling bugs	2018-01-18 15:36:18 -05:00
x25	treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts	2017-11-21 16:35:54 -08:00
xfrm	xfrm: fix boolean assignment in xfrm_get_type_offload	2018-01-23 10:56:36 +01:00
compat.c	net: compat: assert the size of cmsg copied in is as expected	2017-09-20 15:36:18 -07:00
Kconfig	net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros.	2017-09-04 13:25:20 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
socket.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-01-10 17:55:42 -08:00
sysctl_net.c