From: Dan Carpenter <dan.carpenter@oracle.com>
To: Sunil Goutham <sgoutham@marvell.com>
Cc: Geetha sowjanya <gakula@marvell.com>,
Subbaraya Sundeep <sbhatta@marvell.com>,
hariprasad <hkelam@marvell.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net] octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()
Date: Wed, 12 May 2021 13:11:43 +0300 [thread overview]
Message-ID: <YJup3/Ih2vIOXK2R@mwanda> (raw)
This function is called from ethtool_set_rxfh() and "*rss_context"
comes from the user. Add some bounds checking to prevent memory
corruption.
Fixes: 81a4362016e7 ("octeontx2-pf: Add RSS multi group support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
index f4962a97a075..9d9a2e438acf 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
@@ -786,6 +786,10 @@ static int otx2_set_rxfh_context(struct net_device *dev, const u32 *indir,
if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
return -EOPNOTSUPP;
+ if (*rss_context != ETH_RXFH_CONTEXT_ALLOC &&
+ *rss_context >= MAX_RSS_GROUPS)
+ return -EINVAL;
+
rss = &pfvf->hw.rss_info;
if (!rss->enable) {
--
2.30.2
next reply other threads:[~2021-05-12 10:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 10:11 Dan Carpenter [this message]
2021-05-12 10:24 ` [PATCH net] octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context() Sunil Kovvuri
2021-05-12 21:10 ` patchwork-bot+netdevbpf
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