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authorSrinivas Dasari <dasaris@qti.qualcomm.com>2017-07-07 01:43:39 +0300
committerJohannes Berg <johannes.berg@intel.com>2017-07-07 11:21:52 +0200
commit9361df14d1cbf966409d5d6f48bb334384fbe138 (patch)
tree17bd26d1bab504ece421edfc01a241a543a16dfa /fs/dlm/lock.h
parent4b153ca989a9bf61f622ded32e1d689df88edaa5 (diff)
cfg80211: Check if PMKID attribute is of expected size
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, the wireless drivers 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_ATTR_PMKID to make this NLA_UNSPEC and to make sure minimum WLAN_PMKID_LEN bytes are received from userspace with NL80211_ATTR_PMKID. Fixes: 67fbb16be69d ("nl80211: PMKSA caching support") Cc: stable@vger.kernel.org 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>
Diffstat (limited to 'fs/dlm/lock.h')
0 files changed, 0 insertions, 0 deletions