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| author | Srinivas Dasari <dasaris@qti.qualcomm.com> | 2017-07-07 01:43:39 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2017-07-07 11:21:52 +0200 |
| commit | 9361df14d1cbf966409d5d6f48bb334384fbe138 (patch) | |
| tree | 17bd26d1bab504ece421edfc01a241a543a16dfa /arch/x86/pci | |
| parent | 4b153ca989a9bf61f622ded32e1d689df88edaa5 (diff) | |
| download | linux-stable-9361df14d1cbf966409d5d6f48bb334384fbe138.tar.gz linux-stable-9361df14d1cbf966409d5d6f48bb334384fbe138.tar.bz2 linux-stable-9361df14d1cbf966409d5d6f48bb334384fbe138.zip | |
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 'arch/x86/pci')
0 files changed, 0 insertions, 0 deletions