diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2014-03-04 13:46:53 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-03-05 15:49:54 +0100 |
| commit | 864a6040f395464003af8dd0d8ca86fed19866d4 (patch) | |
| tree | 1cfbdad9ad7df012fbddac170402795f2c99ef12 /net/mac80211/mesh_ps.c | |
| parent | cfg80211: remove racy beacon_interval assignment (diff) | |
| download | linux-864a6040f395464003af8dd0d8ca86fed19866d4.tar.xz linux-864a6040f395464003af8dd0d8ca86fed19866d4.zip | |
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/mesh_ps.c')
| -rw-r--r-- | net/mac80211/mesh_ps.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/mac80211/mesh_ps.c b/net/mac80211/mesh_ps.c index 2802f9d9279d..ad8b377b4b9f 100644 --- a/net/mac80211/mesh_ps.c +++ b/net/mac80211/mesh_ps.c @@ -36,6 +36,7 @@ static struct sk_buff *mps_qos_null_get(struct sta_info *sta) sdata->vif.addr); nullfunc->frame_control = fc; nullfunc->duration_id = 0; + nullfunc->seq_ctrl = 0; /* no address resolution for this frame -> set addr 1 immediately */ memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); memset(skb_put(skb, 2), 0, 2); /* append QoS control field */ |