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Message-ID: <20240828071004.1245213-4-ruanjinjie@huawei.com>
Date: Wed, 28 Aug 2024 15:10:02 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <pablo@...filter.org>, <kadlec@...filter.org>, <roopa@...dia.com>,
<razor@...ckwall.org>, <davem@...emloft.net>, <edumazet@...gle.com>,
<kuba@...nel.org>, <pabeni@...hat.com>, <dsahern@...nel.org>,
<krzk@...nel.org>, <netfilter-devel@...r.kernel.org>,
<coreteam@...filter.org>, <bridge@...ts.linux.dev>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH -next 3/5] netfilter: arptables: Use kmemdup_array() instead of kmemdup() for multiple allocation
Let the kmemdup_array() take care about multiplication and possible
overflows.
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
net/ipv4/netfilter/arp_tables.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 14365b20f1c5..4493a785c1ea 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -1547,7 +1547,7 @@ int arpt_register_table(struct net *net,
goto out_free;
}
- ops = kmemdup(template_ops, sizeof(*ops) * num_ops, GFP_KERNEL);
+ ops = kmemdup_array(template_ops, num_ops, sizeof(*ops), GFP_KERNEL);
if (!ops) {
ret = -ENOMEM;
goto out_free;
--
2.34.1
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