linux-sg2042/net/l2tp
Hannes Frederic Sowa 85fbaa7503 inet: fix addr_len/msg->msg_namelen assignment in recv_error and rxpmtu functions
Commit bceaa90240 ("inet: prevent leakage
of uninitialized memory to user in recv syscalls") conditionally updated
addr_len if the msg_name is written to. The recv_error and rxpmtu
functions relied on the recvmsg functions to set up addr_len before.

As this does not happen any more we have to pass addr_len to those
functions as well and set it to the size of the corresponding sockaddr
length.

This broke traceroute and such.

Fixes: bceaa90240 ("inet: prevent leakage of uninitialized memory to user in recv syscalls")
Reported-by: Brad Spengler <spender@grsecurity.net>
Reported-by: Tom Labanowski
Cc: mpb <mpb.mail@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-23 14:46:23 -08:00
..
Kconfig net/l2tp: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:40:01 -08:00
Makefile l2tp: introduce L2TPv3 IP encapsulation support for IPv6 2012-05-01 09:30:55 -04:00
l2tp_core.c ipv6: make lookups simpler and faster 2013-10-09 00:01:25 -04:00
l2tp_core.h net: misc: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
l2tp_debugfs.c ipv6: make lookups simpler and faster 2013-10-09 00:01:25 -04:00
l2tp_eth.c l2tp: fix oops in l2tp_eth_create() error path 2012-11-02 21:56:35 -04:00
l2tp_ip.c inet: prevent leakage of uninitialized memory to user in recv syscalls 2013-11-18 15:12:03 -05:00
l2tp_ip6.c inet: fix addr_len/msg->msg_namelen assignment in recv_error and rxpmtu functions 2013-11-23 14:46:23 -08:00
l2tp_netlink.c genetlink: only pass array to genl_register_family_with_ops() 2013-11-19 16:39:05 -05:00
l2tp_ppp.c net: rework recvmsg handler msg_name and msg_namelen logic 2013-11-20 21:52:30 -05:00