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| author | Srinivas Dasari <dasaris@qti.qualcomm.com> | 2017-07-06 22:43:41 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 05:42:19 (GMT) |
| commit | b68aa7dff96efc59fee40e25b8044017de21161a (patch) | |
| tree | 5cd8a2a151ffd23887dd6ce522c1ab06d4a2522f | |
| parent | 6ae9dd281965423d95f63a5475c120f8af952a4f (diff) | |
| download | linux-b68aa7dff96efc59fee40e25b8044017de21161a.tar.xz | |
cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE
commit 8feb69c7bd89513be80eb19198d48f154b254021 upstream.
Buffer overread may happen as nl80211_set_station() reads 4 bytes
from the attribute NL80211_ATTR_LOCAL_MESH_POWER_MODE without
validating the size of data received when userspace sends less
than 4 bytes of data with NL80211_ATTR_LOCAL_MESH_POWER_MODE.
Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE to avoid
the buffer overread.
Fixes: 3b1c5a5307f ("{cfg,nl}80211: mesh power mode primitives and userspace access")
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>
| -rw-r--r-- | net/wireless/nl80211.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index e7a3068..c5d7d24 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -362,6 +362,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, + [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 }, [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, |