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Lorenzo Bianconi 62e7b6a57c l2tp: remove l2specific_len dependency in l2tp_core 
Remove l2specific_len dependency while building l2tpv3 header or
parsing the received frame since default L2-Specific Sublayer is
always four bytes long and we don't need to rely on a user supplied
value.
Moreover in l2tp netlink code there are no sanity checks to
enforce the relation between l2specific_len and l2specific_type,
so sending a malformed netlink message is possible to set
l2specific_type to L2TP_L2SPECTYPE_DEFAULT (or even
L2TP_L2SPECTYPE_NONE) and set l2specific_len to a value greater than
4 leaking memory on the wire and sending corrupted frames.

Reviewed-by: Guillaume Nault <g.nault@alphalink.fr>
Tested-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-01-19 15:00:49 -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 net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
appletalk net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
atm net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
ax25 net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
batman-adv batman-adv: Convert packet.h to uapi header 2017-12-21 15:35:53 -05:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
bpf bpf: add meta pointer for direct access 2017-09-26 13:36:44 -07:00
bridge netfilter: remove struct nf_afinfo and its helper functions 2018-01-08 18:11:02 +01:00
caif caif: reduce stack size with KASAN 2018-01-19 14:02:12 -05:00
can net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
ceph We have a set of file locking improvements from Zheng, rbd rw/ro 2017-11-21 05:38:32 -10:00
core devlink: Make some functions static 2018-01-19 14:36:29 -05:00
dcb
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dccp net: dccp: Remove dccpprobe module 2018-01-02 14:27:30 -05:00
decnet net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
dns_resolver KEYS: Fix race between updating and finding a negative key 2017-10-18 09:12:40 +01:00
dsa net: dsa: Move padding into Broadcom tagger 2018-01-05 11:21:31 -05:00
ethernet
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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 git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
ipv6 ipv6: mcast: remove dead code 2018-01-19 14:17:44 -05:00
ipx net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
iucv
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kcm net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
key af_key: Fix memory leak in key_notify_policy. 2018-01-10 09:45:11 +01:00
l2tp l2tp: remove l2specific_len dependency in l2tp_core 2018-01-19 15:00:49 -05:00
l3mdev
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lapb treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
llc net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-09 10:37:00 -05:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
mpls net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
ncsi net/ncsi: Don't take any action on HNCDSC AEN 2017-12-18 14:50:11 -05:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-09 10:37:00 -05:00
netlabel net/netlabel: Add list_next_rcu() in rcu_dereference(). 2017-11-18 10:32:41 +09:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
netrom net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
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 flow_netlink: Remove unneeded semicolons 2018-01-18 16:25:01 -05:00
packet net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
phonet net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
psample MAINTAINERS: Update Yotam's E-mail 2017-11-01 12:19:03 +09:00
qrtr net: use rtnl_register_module where needed 2017-12-04 11:32:39 -05:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-09 10:37:00 -05:00
rfkill
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rose net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
rxrpc net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
sched net/sched/sch_prio.c: work around gcc-4.4.4 union initializer issues 2018-01-18 21:11:31 -05:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
smc smc: support variable CLC proposal messages 2017-12-07 15:03:12 -05:00
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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
tls net/tls: Fix inverted error codes to avoid endless loop 2018-01-15 14:21:57 -05:00
unix net: delete /proc THIS_MODULE references 2018-01-16 15:01:33 -05:00
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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
x25 treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts 2017-11-21 16:35:54 -08:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
Kconfig netfilter: don't allocate space for arp/bridge hooks unless needed 2018-01-08 18:01:11 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat.c
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socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-11 22:13:42 -05:00
sysctl_net.c
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