netdev - [PATCH net-next v2 1/6] net: prefer strscpy over strcpy

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240828123224.3697672-2-lihongbo22@huawei.com>
Date: Wed, 28 Aug 2024 20:32:19 +0800
From: Hongbo Li <lihongbo22@...wei.com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <dsahern@...nel.org>, <ralf@...ux-mips.org>,
	<jmaloy@...hat.com>, <ying.xue@...driver.com>, <dan.carpenter@...aro.org>
CC: <netdev@...r.kernel.org>, <linux-hams@...r.kernel.org>,
	<netfilter-devel@...r.kernel.org>, <lihongbo22@...wei.com>
Subject: [PATCH net-next v2 1/6] net: prefer strscpy over strcpy

The deprecated helper strcpy() performs no bounds checking on the
destination buffer. This could result in linear overflows beyond
the end of the buffer, leading to all kinds of misbehaviors.
The safe replacement is strscpy() [1].

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]

Signed-off-by: Hongbo Li <lihongbo22@...wei.com>
---
 net/core/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 0d0b983a6c21..b2ee944867e7 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -11121,7 +11121,7 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name,
 	if (!dev->ethtool)
 		goto free_all;
 
-	strcpy(dev->name, name);
+	strscpy(dev->name, name);
 	dev->name_assign_type = name_assign_type;
 	dev->group = INIT_NETDEV_GROUP;
 	if (!dev->ethtool_ops)
-- 
2.34.1