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mac80211: drop robust management frames from unknown TA

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commit 588f7d39b3 upstream.

When receiving a robust management frame, drop it if we don't have
rx->sta since then we don't have a security association and thus
couldn't possibly validate the frame.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johannes Berg
2019-02-13 15:13:30 +01:00
committed by Greg Kroah-Hartman
parent 3aca04068a
commit c7c680979b
1 changed files with 2 additions and 0 deletions
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2
net/mac80211/rx.c
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@@ -3324,6 +3324,8 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
case NL80211_IFTYPE_STATION:
if (!bssid && !sdata->u.mgd.use_4addr)
return false;
if (ieee80211_is_robust_mgmt_frame(skb) && !rx->sta)
return false;
if (multicast)
return true;
return ether_addr_equal(sdata->vif.addr, hdr->addr1);