tree dd91eefd0ee5fe21ba06816a4a25cc2303603744
parent 65d0f19e583e80e42b1c67c166bfc4dfdf6ab693
author Jouni Malinen <jouni@qca.qualcomm.com> 1316610787 +0300
committer John W. Linville <linville@tuxdriver.com> 1316635104 -0400

cfg80211: Fix validation of AKM suites

Incorrect variable was used in validating the akm_suites array from
NL80211_ATTR_AKM_SUITES. In addition, there was no explicit
validation of the array length (we only have room for
NL80211_MAX_NR_AKM_SUITES).

This can result in a buffer write overflow for stack variables with
arbitrary data from user space. The nl80211 commands using the affected
functionality require GENL_ADMIN_PERM, so this is only exposed to admin
users.

Cc: stable@kernel.org
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>