diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2022-05-26 11:02:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-14 16:59:33 +0200 |
| commit | 657e7174603f0aab2cdedc64ac81edffd2a87afe (patch) | |
| tree | 8ac5fda18055d3f29485bff4feebbe84d260899c | |
| parent | 2798944556a2ba898b945cc0b06fb4aaff2a9e3c (diff) | |
net: ethernet: mtk_eth_soc: out of bounds read in mtk_hwlro_get_fdir_entry()
[ Upstream commit e7e7104e2d5ddf3806a28695670f21bef471f1e1 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -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 59f3dce3ab1d..f2eaf8c13cc2 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1575,6 +1575,9 @@ 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]); |