From e8b970c8e367e85fab9b8ac4f36080e5d653c38e Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Thu, 7 Nov 2019 01:01:58 +0200 Subject: mt76: fix possible out-of-bound access in mt7615_fill_txs/mt7603_fill_txs Fix possible out-of-bound access of status rates array in mt7615_fill_txs/mt7603_fill_txs routines Fixes: c5211e997eca ("mt76: mt7603: rework and fix tx status reporting") Fixes: 4af81f02b49c ("mt76: mt7615: sync with mt7603 rate control changes") Signed-off-by: Lorenzo Bianconi Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/mt7603/mac.c | 4 +++- drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/mediatek/mt76') diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c index 1497d5ec649e..812d081ad943 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c @@ -1136,8 +1136,10 @@ mt7603_fill_txs(struct mt7603_dev *dev, struct mt7603_sta *sta, if (idx && (cur_rate->idx != info->status.rates[i].idx || cur_rate->flags != info->status.rates[i].flags)) { i++; - if (i == ARRAY_SIZE(info->status.rates)) + if (i == ARRAY_SIZE(info->status.rates)) { + i--; break; + } info->status.rates[i] = *cur_rate; info->status.rates[i].count = 0; diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index 2b810ba359ae..c77adc5d2552 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -1039,8 +1039,10 @@ static bool mt7615_fill_txs(struct mt7615_dev *dev, struct mt7615_sta *sta, if (idx && (cur_rate->idx != info->status.rates[i].idx || cur_rate->flags != info->status.rates[i].flags)) { i++; - if (i == ARRAY_SIZE(info->status.rates)) + if (i == ARRAY_SIZE(info->status.rates)) { + i--; break; + } info->status.rates[i] = *cur_rate; info->status.rates[i].count = 0; -- cgit v1.2.3