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wifi: mt76: mt7996: Fix possible oob access in mt7996_mac_write_txwi_80211()

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Check frame length before accessing the mgmt fields in
mt7996_mac_write_txwi_80211 in order to avoid a possible oob access.

Fixes: 98686cd21624c ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Lorenzo Bianconi <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Lorenzo Bianconi
2026-03-01 16:46:52 +00:00
committed by Felix Fietkau
parent 699a4aa3b8
commit aee736a27e
1 changed files with 1 additions and 0 deletions
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mt7996/mac.c
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@@ -764,6 +764,7 @@ mt7996_mac_write_txwi_80211(struct mt7996_dev *dev, __le32 *txwi,
u32 val;
if (ieee80211_is_action(fc) &&
skb->len >= IEEE80211_MIN_ACTION_SIZE + 1 &&
mgmt->u.action.category == WLAN_CATEGORY_BACK &&
mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) {
if (is_mt7990(&dev->mt76))