linux/net/packet
Eric W. Biederman be0ef855ba net: Use netlink_ns_capable to verify the permisions of netlink messages
[ Upstream commit 90f62cf30a ]

It is possible by passing a netlink socket to a more privileged
executable and then to fool that executable into writing to the socket
data that happens to be valid netlink message to do something that
privileged executable did not intend to do.

To keep this from happening replace bare capable and ns_capable calls
with netlink_capable, netlink_net_calls and netlink_ns_capable calls.
Which act the same as the previous calls except they verify that the
opener of the socket had the desired permissions as well.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-26 15:15:38 -04:00
..
Kconfig packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00
Makefile packet: Diag core and basic socket info dumping 2012-08-14 16:56:33 -07:00
af_packet.c af_packet: remove a stray tab in packet_set_ring() 2014-02-18 18:02:25 -05:00
diag.c net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-06-26 15:15:38 -04:00
internal.h packet: use percpu mmap tx frame pending refcount 2014-01-16 16:17:12 -08:00