net: wimax/i2400m: fix NULL-deref at probe
authorJohan Hovold <johan@kernel.org>
Mon, 13 Mar 2017 12:42:03 +0000 (13:42 +0100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 13 Mar 2017 19:28:40 +0000 (12:28 -0700)
commit6e526fdff7be4f13b24f929a04c0e9ae6761291e
tree5c1adb8fb7580b551628871a0d08b32b16ad613c
parent68c32f9c2a36d410aa242e661506e5b2c2764179
net: wimax/i2400m: fix NULL-deref at probe

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory beyond the endpoint array should a
malicious device lack the expected endpoints.

The endpoints are specifically dereferenced in the i2400m_bootrom_init
path during probe (e.g. in i2400mu_tx_bulk_out).

Fixes: f398e4240fce ("i2400m/USB: probe/disconnect, dev init/shutdown
and reset backends")
Cc: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/wimax/i2400m/usb.c