mac80211: drop spoofed packets in ad-hoc mode

[~andy/linux] / net / mac80211 / rx.c

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 54395d7583ba70e31111b08092c88d2901be7815..674eac1f996c9ddd664f2f70022514efc228b109 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3056,6 +3056,9 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx,
        case NL80211_IFTYPE_ADHOC:
                if (!bssid)
                        return 0;
+               if (ether_addr_equal(sdata->vif.addr, hdr->addr2) ||
+                   ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2))
+                       return 0;
                if (ieee80211_is_beacon(hdr->frame_control)) {
                        return 1;
                } else if (!ieee80211_bssid_match(bssid, sdata->u.ibss.bssid)) {