3.16.74-rc1 review patch. If anyone has any objections, please let me know.
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From: Johannes Berg johannes.berg@intel.com
commit 588f7d39b3592a36fb7702ae3b8bdd9be4621e2f 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.
Signed-off-by: Johannes Berg johannes.berg@intel.com [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- net/mac80211/rx.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -3084,6 +3084,8 @@ static bool prepare_for_handlers(struct 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 && !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { if (!(sdata->dev->flags & IFF_PROMISC) ||