diff options
| author |   Lorenzo Bianconi <lorenzo@kernel.org> | 2019-02-20 10:20:37 +0100 |
|---|---|---|
| committer |   Felix Fietkau <nbd@nbd.name> | 2019-02-26 12:29:56 +0100 |
| commit | 200abe6a963a8720397f7156403ff14d09457704 (patch) | |
| tree | e98c14b8352a1f93245bf52e8ea13195754243eb /drivers/net/wireless | |
| parent | mt76: usb: simplify mt76u_tx_build_sg routine (diff) | |
| download | linux-dev-200abe6a963a8720397f7156403ff14d09457704.tar.xz linux-dev-200abe6a963a8720397f7156403ff14d09457704.zip | |
mt76: usb: check urb->num_sgs limit in mt76u_process_rx_entry
check nsgs value is less than urb->num_sgs in mt76u_process_rx_entry
in order to avoid an out-of-bound access of urb->sg array
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/usb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c index 096bc99378f5..ac3da948d43a 100644 --- a/drivers/net/wireless/mediatek/mt76/usb.c +++ b/drivers/net/wireless/mediatek/mt76/usb.c @@ -468,7 +468,7 @@ mt76u_process_rx_entry(struct mt76_dev *dev, struct mt76u_buf *buf) __skb_put(skb, data_len); len -= data_len; - while (len > 0 && urb->num_sgs) { + while (len > 0 && nsgs < urb->num_sgs) { data_len = min_t(int, len, urb->sg[nsgs].length); skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, sg_page(&urb->sg[nsgs]), |