]> git.karo-electronics.de Git - karo-tx-linux.git/commit
l2tp: fix info leak in l2tp_ip6_recvmsg()
authorMathias Krause <minipli@googlemail.com>
Sun, 7 Apr 2013 01:51:55 +0000 (01:51 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 1 May 2013 16:46:02 +0000 (09:46 -0700)
commit9f657ed0185e64510e6b37b6e3edce47e8d0cf04
tree78d8fdd40c0cfb52e0c949d531f297557b0ef114
parent9d22aa4b113691ce0ed033d52997a25530e3f3d0
l2tp: fix info leak in l2tp_ip6_recvmsg()

[ Upstream commit b860d3cc62877fad02863e2a08efff69a19382d2 ]

The L2TP code for IPv6 fails to initialize the l2tp_conn_id member of
struct sockaddr_l2tpip6 and therefore leaks four bytes kernel stack
in l2tp_ip6_recvmsg() in case msg_name is set.

Initialize l2tp_conn_id with 0 to avoid the info leak.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/l2tp/l2tp_ip6.c