mac80211, mt76: add fixes for recently discovered security issues

Fixes CVE-2022-47522

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit d54c91bd9ab3c54ee06923eafbd67047816a37e4)

2 files changed, 312 insertions, 0 deletions

diff --git a/package/kernel/mt76/patches/110-api_update.patch b/package/kernel/mt76/patches/110-api_update.patch
new file mode 100644
index 0000000000..27bd6286b0
--- /dev/null
+++ b/package/kernel/mt76/patches/110-api_update.patch
@@ -0,0 +1,11 @@
+--- a/tx.c
++++ b/tx.c
+@@ -325,7 +325,7 @@ mt76_tx(struct mt76_phy *phy, struct iee
+ 	if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) &&
+ 	    !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
+ 	    !ieee80211_is_data(hdr->frame_control) &&
+-	    !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) {
++	    !ieee80211_is_bufferable_mmpdu(skb)) {
+ 		qid = MT_TXQ_PSD;
+ 	}
+ 
diff --git a/package/kernel/mt76/patches/120-wifi-mt76-ignore-key-disable-commands.patch b/package/kernel/mt76/patches/120-wifi-mt76-ignore-key-disable-commands.patch
new file mode 100644
index 0000000000..3ac6cebca8
--- /dev/null
+++ b/package/kernel/mt76/patches/120-wifi-mt76-ignore-key-disable-commands.patch
@@ -0,0 +1,301 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 22 Mar 2023 10:17:49 +0100
+Subject: [PATCH] wifi: mt76: ignore key disable commands
+
+This helps avoid cleartext leakage of already queued or powersave buffered
+packets, when a reassoc triggers the key deletion.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/mt7603/main.c
++++ b/mt7603/main.c
+@@ -512,15 +512,15 @@ mt7603_set_key(struct ieee80211_hw *hw,
+ 	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
+ 		return -EOPNOTSUPP;
+ 
+-	if (cmd == SET_KEY) {
+-		key->hw_key_idx = wcid->idx;
+-		wcid->hw_key_idx = idx;
+-	} else {
++	if (cmd != SET_KEY) {
+ 		if (idx == wcid->hw_key_idx)
+ 			wcid->hw_key_idx = -1;
+ 
+-		key = NULL;
++		return 0;
+ 	}
++
++	key->hw_key_idx = wcid->idx;
++	wcid->hw_key_idx = idx;
+ 	mt76_wcid_key_setup(&dev->mt76, wcid, key);
+ 
+ 	return mt7603_wtbl_set_key(dev, wcid->idx, key);
+--- a/mt7615/mac.c
++++ b/mt7615/mac.c
+@@ -1178,8 +1178,7 @@ EXPORT_SYMBOL_GPL(mt7615_mac_set_rates);
+ static int
+ mt7615_mac_wtbl_update_key(struct mt7615_dev *dev, struct mt76_wcid *wcid,
+ 			   struct ieee80211_key_conf *key,
+-			   enum mt76_cipher_type cipher, u16 cipher_mask,
+-			   enum set_key_cmd cmd)
++			   enum mt76_cipher_type cipher, u16 cipher_mask)
+ {
+ 	u32 addr = mt7615_mac_wtbl_addr(dev, wcid->idx) + 30 * 4;
+ 	u8 data[32] = {};
+@@ -1188,27 +1187,18 @@ mt7615_mac_wtbl_update_key(struct mt7615
+ 		return -EINVAL;
+ 
+ 	mt76_rr_copy(dev, addr, data, sizeof(data));
+-	if (cmd == SET_KEY) {
+-		if (cipher == MT_CIPHER_TKIP) {
+-			/* Rx/Tx MIC keys are swapped */
+-			memcpy(data, key->key, 16);
+-			memcpy(data + 16, key->key + 24, 8);
+-			memcpy(data + 24, key->key + 16, 8);
+-		} else {
+-			if (cipher_mask == BIT(cipher))
+-				memcpy(data, key->key, key->keylen);
+-			else if (cipher != MT_CIPHER_BIP_CMAC_128)
+-				memcpy(data, key->key, 16);
+-			if (cipher == MT_CIPHER_BIP_CMAC_128)
+-				memcpy(data + 16, key->key, 16);
+-		}
++	if (cipher == MT_CIPHER_TKIP) {
++		/* Rx/Tx MIC keys are swapped */
++		memcpy(data, key->key, 16);
++		memcpy(data + 16, key->key + 24, 8);
++		memcpy(data + 24, key->key + 16, 8);
+ 	} else {
++		if (cipher_mask == BIT(cipher))
++			memcpy(data, key->key, key->keylen);
++		else if (cipher != MT_CIPHER_BIP_CMAC_128)
++			memcpy(data, key->key, 16);
+ 		if (cipher == MT_CIPHER_BIP_CMAC_128)
+-			memset(data + 16, 0, 16);
+-		else if (cipher_mask)
+-			memset(data, 0, 16);
+-		if (!cipher_mask)
+-			memset(data, 0, sizeof(data));
++			memcpy(data + 16, key->key, 16);
+ 	}
+ 
+ 	mt76_wr_copy(dev, addr, data, sizeof(data));
+@@ -1219,7 +1209,7 @@ mt7615_mac_wtbl_update_key(struct mt7615
+ static int
+ mt7615_mac_wtbl_update_pk(struct mt7615_dev *dev, struct mt76_wcid *wcid,
+ 			  enum mt76_cipher_type cipher, u16 cipher_mask,
+-			  int keyidx, enum set_key_cmd cmd)
++			  int keyidx)
+ {
+ 	u32 addr = mt7615_mac_wtbl_addr(dev, wcid->idx), w0, w1;
+ 
+@@ -1238,9 +1228,7 @@ mt7615_mac_wtbl_update_pk(struct mt7615_
+ 	else
+ 		w0 &= ~MT_WTBL_W0_RX_IK_VALID;
+ 
+-	if (cmd == SET_KEY &&
+-	    (cipher != MT_CIPHER_BIP_CMAC_128 ||
+-	     cipher_mask == BIT(cipher))) {
++	if (cipher != MT_CIPHER_BIP_CMAC_128 || cipher_mask == BIT(cipher)) {
+ 		w0 &= ~MT_WTBL_W0_KEY_IDX;
+ 		w0 |= FIELD_PREP(MT_WTBL_W0_KEY_IDX, keyidx);
+ 	}
+@@ -1257,19 +1245,10 @@ mt7615_mac_wtbl_update_pk(struct mt7615_
+ 
+ static void
+ mt7615_mac_wtbl_update_cipher(struct mt7615_dev *dev, struct mt76_wcid *wcid,
+-			      enum mt76_cipher_type cipher, u16 cipher_mask,
+-			      enum set_key_cmd cmd)
++			      enum mt76_cipher_type cipher, u16 cipher_mask)
+ {
+ 	u32 addr = mt7615_mac_wtbl_addr(dev, wcid->idx);
+ 
+-	if (!cipher_mask) {
+-		mt76_clear(dev, addr + 2 * 4, MT_WTBL_W2_KEY_TYPE);
+-		return;
+-	}
+-
+-	if (cmd != SET_KEY)
+-		return;
+-
+ 	if (cipher == MT_CIPHER_BIP_CMAC_128 &&
+ 	    cipher_mask & ~BIT(MT_CIPHER_BIP_CMAC_128))
+ 		return;
+@@ -1280,8 +1259,7 @@ mt7615_mac_wtbl_update_cipher(struct mt7
+ 
+ int __mt7615_mac_wtbl_set_key(struct mt7615_dev *dev,
+ 			      struct mt76_wcid *wcid,
+-			      struct ieee80211_key_conf *key,
+-			      enum set_key_cmd cmd)
++			      struct ieee80211_key_conf *key)
+ {
+ 	enum mt76_cipher_type cipher;
+ 	u16 cipher_mask = wcid->cipher;
+@@ -1291,19 +1269,14 @@ int __mt7615_mac_wtbl_set_key(struct mt7
+ 	if (cipher == MT_CIPHER_NONE)
+ 		return -EOPNOTSUPP;
+ 
+-	if (cmd == SET_KEY)
+-		cipher_mask |= BIT(cipher);
+-	else
+-		cipher_mask &= ~BIT(cipher);
+-
+-	mt7615_mac_wtbl_update_cipher(dev, wcid, cipher, cipher_mask, cmd);
+-	err = mt7615_mac_wtbl_update_key(dev, wcid, key, cipher, cipher_mask,
+-					 cmd);
++	cipher_mask |= BIT(cipher);
++	mt7615_mac_wtbl_update_cipher(dev, wcid, cipher, cipher_mask);
++	err = mt7615_mac_wtbl_update_key(dev, wcid, key, cipher, cipher_mask);
+ 	if (err < 0)
+ 		return err;
+ 
+ 	err = mt7615_mac_wtbl_update_pk(dev, wcid, cipher, cipher_mask,
+-					key->keyidx, cmd);
++					key->keyidx);
+ 	if (err < 0)
+ 		return err;
+ 
+@@ -1314,13 +1287,12 @@ int __mt7615_mac_wtbl_set_key(struct mt7
+ 
+ int mt7615_mac_wtbl_set_key(struct mt7615_dev *dev,
+ 			    struct mt76_wcid *wcid,
+-			    struct ieee80211_key_conf *key,
+-			    enum set_key_cmd cmd)
++			    struct ieee80211_key_conf *key)
+ {
+ 	int err;
+ 
+ 	spin_lock_bh(&dev->mt76.lock);
+-	err = __mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
++	err = __mt7615_mac_wtbl_set_key(dev, wcid, key);
+ 	spin_unlock_bh(&dev->mt76.lock);
+ 
+ 	return err;
+--- a/mt7615/main.c
++++ b/mt7615/main.c
+@@ -391,18 +391,17 @@ static int mt7615_set_key(struct ieee802
+ 
+ 	if (cmd == SET_KEY)
+ 		*wcid_keyidx = idx;
+-	else if (idx == *wcid_keyidx)
+-		*wcid_keyidx = -1;
+-	else
++	else {
++		if (idx == *wcid_keyidx)
++			*wcid_keyidx = -1;
+ 		goto out;
++	}
+ 
+-	mt76_wcid_key_setup(&dev->mt76, wcid,
+-			    cmd == SET_KEY ? key : NULL);
+-
++	mt76_wcid_key_setup(&dev->mt76, wcid, key);
+ 	if (mt76_is_mmio(&dev->mt76))
+-		err = mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
++		err = mt7615_mac_wtbl_set_key(dev, wcid, key);
+ 	else
+-		err = __mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
++		err = __mt7615_mac_wtbl_set_key(dev, wcid, key);
+ 
+ out:
+ 	mt7615_mutex_release(dev);
+--- a/mt7615/mt7615.h
++++ b/mt7615/mt7615.h
+@@ -482,11 +482,9 @@ int mt7615_mac_write_txwi(struct mt7615_
+ void mt7615_mac_set_timing(struct mt7615_phy *phy);
+ int __mt7615_mac_wtbl_set_key(struct mt7615_dev *dev,
+ 			      struct mt76_wcid *wcid,
+-			      struct ieee80211_key_conf *key,
+-			      enum set_key_cmd cmd);
++			      struct ieee80211_key_conf *key);
+ int mt7615_mac_wtbl_set_key(struct mt7615_dev *dev, struct mt76_wcid *wcid,
+-			    struct ieee80211_key_conf *key,
+-			    enum set_key_cmd cmd);
++			    struct ieee80211_key_conf *key);
+ void mt7615_mac_reset_work(struct work_struct *work);
+ u32 mt7615_mac_get_sta_tid_sn(struct mt7615_dev *dev, int wcid, u8 tid);
+ 
+--- a/mt76x02_util.c
++++ b/mt76x02_util.c
+@@ -455,20 +455,20 @@ int mt76x02_set_key(struct ieee80211_hw
+ 	msta = sta ? (struct mt76x02_sta *)sta->drv_priv : NULL;
+ 	wcid = msta ? &msta->wcid : &mvif->group_wcid;
+ 
+-	if (cmd == SET_KEY) {
+-		key->hw_key_idx = wcid->idx;
+-		wcid->hw_key_idx = idx;
+-		if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
+-			key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
+-			wcid->sw_iv = true;
+-		}
+-	} else {
++	if (cmd != SET_KEY) {
+ 		if (idx == wcid->hw_key_idx) {
+ 			wcid->hw_key_idx = -1;
+ 			wcid->sw_iv = false;
+ 		}
+ 
+-		key = NULL;
++		return 0;
++	}
++
++	key->hw_key_idx = wcid->idx;
++	wcid->hw_key_idx = idx;
++	if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
++		key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
++		wcid->sw_iv = true;
+ 	}
+ 	mt76_wcid_key_setup(&dev->mt76, wcid, key);
+ 
+--- a/mt7915/main.c
++++ b/mt7915/main.c
+@@ -387,16 +387,15 @@ static int mt7915_set_key(struct ieee802
+ 		mt7915_mcu_add_bss_info(phy, vif, true);
+ 	}
+ 
+-	if (cmd == SET_KEY)
++	if (cmd == SET_KEY) {
+ 		*wcid_keyidx = idx;
+-	else if (idx == *wcid_keyidx)
+-		*wcid_keyidx = -1;
+-	else
++	} else {
++		if (idx == *wcid_keyidx)
++			*wcid_keyidx = -1;
+ 		goto out;
++	}
+ 
+-	mt76_wcid_key_setup(&dev->mt76, wcid,
+-			    cmd == SET_KEY ? key : NULL);
+-
++	mt76_wcid_key_setup(&dev->mt76, wcid, key);
+ 	err = mt76_connac_mcu_add_key(&dev->mt76, vif, &msta->bip,
+ 				      key, MCU_EXT_CMD(STA_REC_UPDATE),
+ 				      &msta->wcid, cmd);
+--- a/mt7921/main.c
++++ b/mt7921/main.c
+@@ -463,16 +463,15 @@ static int mt7921_set_key(struct ieee802
+ 
+ 	mt7921_mutex_acquire(dev);
+ 
+-	if (cmd == SET_KEY)
++	if (cmd == SET_KEY) {
+ 		*wcid_keyidx = idx;
+-	else if (idx == *wcid_keyidx)
+-		*wcid_keyidx = -1;
+-	else
++	} else {
++		if (idx == *wcid_keyidx)
++			*wcid_keyidx = -1;
+ 		goto out;
++	}
+ 
+-	mt76_wcid_key_setup(&dev->mt76, wcid,
+-			    cmd == SET_KEY ? key : NULL);
+-
++	mt76_wcid_key_setup(&dev->mt76, wcid, key);
+ 	err = mt76_connac_mcu_add_key(&dev->mt76, vif, &msta->bip,
+ 				      key, MCU_UNI_CMD(STA_REC_UPDATE),
+ 				      &msta->wcid, cmd);