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Guillaume Nault ecd012e45a l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl() 
pppol2tp_tunnel_ioctl() can act on an L2TPv3 tunnel, in which case
'session' may be an Ethernet pseudo-wire.

However, pppol2tp_session_ioctl() expects a PPP pseudo-wire, as it
assumes l2tp_session_priv() points to a pppol2tp_session structure. For
an Ethernet pseudo-wire l2tp_session_priv() points to an l2tp_eth_sess
structure instead, making pppol2tp_session_ioctl() access invalid
memory.

Fixes: d9e31d17ce ("l2tp: Add L2TP ethernet pseudowire support")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-06-15 09:12:37 -07:00
..
Kconfig l2tp: Call udp_sock_create 2014-07-14 16:12:15 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
l2tp_core.c l2tp: hold reference on tunnels printed in l2tp/tunnels debugfs file 2018-04-13 12:17:26 -04:00
l2tp_core.h l2tp: hold reference on tunnels printed in l2tp/tunnels debugfs file 2018-04-13 12:17:26 -04:00
l2tp_debugfs.c l2tp: consistent reference counting in procfs and debufs 2018-04-27 11:06:35 -04:00
l2tp_eth.c l2tp: remove .tunnel_sock from struct l2tp_eth 2017-11-11 22:08:23 +09:00
l2tp_ip.c net: convert datagram_poll users tp ->poll_mask 2018-05-26 09:16:44 +02:00
l2tp_ip6.c net: convert datagram_poll users tp ->poll_mask 2018-05-26 09:16:44 +02:00
l2tp_netlink.c l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels 2018-06-15 09:12:37 -07:00
l2tp_ppp.c l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl() 2018-06-15 09:12:37 -07:00