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author | Srinivas Dasari <dasaris@qti.qualcomm.com> | 2017-07-07 01:43:40 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 07:42:20 +0200 |
commit | 6a90f81ab6398499e54927f5232b0a90d447b6de (patch) | |
tree | 281ea026b757449a6d6d0af47e36b7ea5a49de26 /drivers/irqchip | |
parent | 7e9e9638afdfa122ba0dc314c9219dd90ed116b8 (diff) |
cfg80211: Check if NAN service ID is of expected size
commit 0a27844ce86d039d74221dd56cd8c0349b146b63 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: a442b761b24 ("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>
Diffstat (limited to 'drivers/irqchip')
0 files changed, 0 insertions, 0 deletions