Files
linux/net/wireless
Srinivas Dasari fc0a2569a0 cfg80211: Check if NAN service ID is of expected size
commit 0a27844ce8 upstream.

nla policy checks for only maximum length of the attribute data when the
attribute type is NLA_BINARY. If userspace sends less data than
specified, cfg80211 may access illegal memory. When type is NLA_UNSPEC,
nla policy check ensures that userspace sends minimum specified length
number of bytes.

Remove type assignment to NLA_BINARY from nla_policy of
NL80211_NAN_FUNC_SERVICE_ID to make these NLA_UNSPEC and to make sure
minimum NL80211_NAN_FUNC_SERVICE_ID_LEN bytes are received from
userspace with NL80211_NAN_FUNC_SERVICE_ID.

Fixes: a442b761b2 ("cfg80211: add add_nan_func / del_nan_func")
Signed-off-by: Srinivas Dasari <dasaris@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-21 07:00:10 +02:00
..
2016-09-30 13:21:14 +02:00
2017-02-09 15:17:30 +01:00
2016-04-12 15:56:15 +02:00
2017-02-09 15:17:30 +01:00