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mt76: add sanity check for a-mpdu rx wcid index

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Avoid dereferencing invalid ids

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2019-10-10 21:59:49 +02:00
parent 01642d8bed
commit 391e1488f8
1 changed files with 1 additions and 1 deletions
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mac80211.c
+1 -1
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@@ -641,7 +641,7 @@ mt76_airtime_flush_ampdu(struct mt76_dev *dev)
return;
wcid_idx = dev->rx_ampdu_status.wcid_idx;
if (dev->rx_ampdu_status.wcid_idx != 0xff)
if (wcid_idx < ARRAY_SIZE(dev->wcid))
wcid = rcu_dereference(dev->wcid[wcid_idx]);
else
wcid = NULL;