diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2014-03-04 16:46:53 +0400 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-03-05 18:49:54 +0400 |
| commit | 864a6040f395464003af8dd0d8ca86fed19866d4 (patch) | |
| tree | 1cfbdad9ad7df012fbddac170402795f2c99ef12 /net/mac80211/sta_info.c | |
| parent | bc00a91d627026f08abf69bf5d0015499dd30c2a (diff) | |
| download | linux-864a6040f395464003af8dd0d8ca86fed19866d4.tar.xz | |
mac80211: clear sequence/fragment number in QoS-null frames
Avoid leaking data by sending uninitialized memory and setting an
invalid (non-zero) fragment number (the sequence number is ignored
anyway) by setting the seq_ctrl field to zero.
Cc: stable@vger.kernel.org
Fixes: 3f52b7e328c5 ("mac80211: mesh power save basics")
Fixes: ce662b44ce22 ("mac80211: send (QoS) Null if no buffered frames")
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/sta_info.c')
| -rw-r--r-- | net/mac80211/sta_info.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index a023b432143b..137a192e64bc 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -1206,6 +1206,7 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); + nullfunc->seq_ctrl = 0; skb->priority = tid; skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]); |