diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2022-05-26 11:02:42 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-05-27 07:59:41 +0100 |
| commit | e7e7104e2d5ddf3806a28695670f21bef471f1e1 (patch) | |
| tree | 26e045ee1b365d706f6cc4acc16acd38c0e1cd47 /drivers/net/ethernet | |
| parent | a54ce3703613e41fe1d98060b62ec09a3984dc28 (diff) | |
net: ethernet: mtk_eth_soc: out of bounds read in mtk_hwlro_get_fdir_entry()
The "fsp->location" variable comes from user via ethtool_get_rxnfc().
Check that it is valid to prevent an out of bounds read.
Fixes: 7aab747e5563 ("net: ethernet: mediatek: add ethtool functions to configure RX flows of HW LRO")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index a9d4fd8945bb..b3b3c079a0fa 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2212,6 +2212,9 @@ static int mtk_hwlro_get_fdir_entry(struct net_device *dev, struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; + if (fsp->location >= ARRAY_SIZE(mac->hwlro_ip)) + return -EINVAL; + /* only tcp dst ipv4 is meaningful, others are meaningless */ fsp->flow_type = TCP_V4_FLOW; fsp->h_u.tcp_ip4_spec.ip4dst = ntohl(mac->hwlro_ip[fsp->location]); |