diff options
| author |   Lorenzo Bianconi <lorenzo@kernel.org> | 2021-11-18 11:50:27 +0100 |
|---|---|---|
| committer |   Felix Fietkau <nbd@nbd.name> | 2021-12-19 15:23:59 +0100 |
| commit | ec2ebc1c5a5ce49538fa78108c53eaf722eee908 (patch) | |
| tree | d8c427a605f1382959758db07e22335c013b3999 | |
| parent | mt76: fix possible OOB issue in mt76_calculate_default_rate (diff) | |
mt76: mt7921: fix possible NULL pointer dereference in mt7921_mac_write_txwi
Fix a possible NULL pointer deference issue in mt7921_mac_write_txwi
routine if vif is NULL.
Fixes: 33920b2bf0483 ("mt76: add support for setting mcast rate")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c index 9bbbc0d89694..401f91c1657a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c @@ -981,7 +981,7 @@ void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi, mt7921_mac_write_txwi_80211(dev, txwi, skb, key); if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) { - int rateidx = ffs(vif->bss_conf.basic_rates) - 1; + int rateidx = vif ? ffs(vif->bss_conf.basic_rates) - 1 : 0; u16 rate, mode; /* hardware won't add HTC for mgmt/ctrl frame */ |