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| author | Johannes Berg <johannes@sipsolutions.net> | 2009-07-10 11:39:26 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-24 15:05:10 -0400 |
| commit | a43816df2a1a61effcb701037bdf63621d066182 (patch) | |
| tree | 33346bbbb1621dfc7966c2f4ad8b1a76f4145d18 /net/mac80211/mesh.c | |
| parent | ec3f149017ef3fd21343b1dcec3589eec6ba5dd5 (diff) | |
| download | linux-stable-a43816df2a1a61effcb701037bdf63621d066182.tar.gz linux-stable-a43816df2a1a61effcb701037bdf63621d066182.tar.bz2 linux-stable-a43816df2a1a61effcb701037bdf63621d066182.zip | |
mac80211: mesh: fix two small problems
1) there's a spin_lock() that needs to be spin_lock_bh()
2) action frames of size 24 might cause an out-of-bounds
memory access (for the 25th byte only, so no big deal)
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/mesh.c')
| -rw-r--r-- | net/mac80211/mesh.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 542ea025494e..8a97b1423088 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -685,9 +685,12 @@ ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) fc = le16_to_cpu(mgmt->frame_control); switch (fc & IEEE80211_FCTL_STYPE) { + case IEEE80211_STYPE_ACTION: + if (skb->len < IEEE80211_MIN_ACTION_SIZE) + return RX_DROP_MONITOR; + /* fall through */ case IEEE80211_STYPE_PROBE_RESP: case IEEE80211_STYPE_BEACON: - case IEEE80211_STYPE_ACTION: skb_queue_tail(&ifmsh->skb_queue, skb); queue_work(local->hw.workqueue, &ifmsh->work); return RX_QUEUED; |