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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2020-05-06 13:16:22 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-05-06 14:15:46 -0700 |
| commit | 39bd16df7c31bb8cf5dfd0c88e42abd5ae10029d (patch) | |
| tree | f0d1b06ad51170facfc101d6991082993fa55549 /drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | |
| parent | selftests: net: tcp_mmap: clear whole tcp_zerocopy_receive struct (diff) | |
| download | wireguard-linux-39bd16df7c31bb8cf5dfd0c88e42abd5ae10029d.tar.xz wireguard-linux-39bd16df7c31bb8cf5dfd0c88e42abd5ae10029d.zip | |
net: mvpp2: prevent buffer overflow in mvpp22_rss_ctx()
The "rss_context" variable comes from the user via ethtool_get_rxfh().
It can be any u32 value except zero. Eventually it gets passed to
mvpp22_rss_ctx() and if it is over MVPP22_N_RSS_TABLES (8) then it
results in an array overflow.
Fixes: 895586d5dc32 ("net: mvpp2: cls: Use RSS contexts to handle RSS tables")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 1fa60e985b43..2b5dad2ec650 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -4329,6 +4329,8 @@ static int mvpp2_ethtool_get_rxfh_context(struct net_device *dev, u32 *indir, if (!mvpp22_rss_is_supported()) return -EOPNOTSUPP; + if (rss_context >= MVPP22_N_RSS_TABLES) + return -EINVAL; if (hfunc) *hfunc = ETH_RSS_HASH_CRC32; |