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Message-ID: <20231012-strncpy-drivers-net-usb-sr9800-c-v1-1-5540832c8ec2@google.com> Date: Thu, 12 Oct 2023 22:33:34 +0000 From: Justin Stitt <justinstitt@...gle.com> To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: linux-usb@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org, Justin Stitt <justinstitt@...gle.com> Subject: [PATCH] net: usb: replace deprecated strncpy with strscpy strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. Other implementations of .*get_drvinfo use strscpy so this patch brings sr_get_drvinfo() in line as well: igb/igb_ethtool.c +851 static void igb_get_drvinfo(struct net_device *netdev, igbvf/ethtool.c 167:static void igbvf_get_drvinfo(struct net_device *netdev, i40e/i40e_ethtool.c 1999:static void i40e_get_drvinfo(struct net_device *netdev, e1000/e1000_ethtool.c 529:static void e1000_get_drvinfo(struct net_device *netdev, ixgbevf/ethtool.c 211:static void ixgbevf_get_drvinfo(struct net_device *netdev, ... Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@...r.kernel.org Signed-off-by: Justin Stitt <justinstitt@...gle.com> --- Note: build-tested only. Found with: $ rg "strncpy\(" --- drivers/net/usb/sr9800.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c index f5e19f3ef6cd..143bd4ab160d 100644 --- a/drivers/net/usb/sr9800.c +++ b/drivers/net/usb/sr9800.c @@ -474,8 +474,8 @@ static void sr_get_drvinfo(struct net_device *net, { /* Inherit standard device info */ usbnet_get_drvinfo(net, info); - strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); - strncpy(info->version, DRIVER_VERSION, sizeof(info->version)); + strscpy(info->driver, DRIVER_NAME, sizeof(info->driver)); + strscpy(info->version, DRIVER_VERSION, sizeof(info->version)); } static u32 sr_get_link(struct net_device *net) --- base-commit: cbf3a2cb156a2c911d8f38d8247814b4c07f49a2 change-id: 20231012-strncpy-drivers-net-usb-sr9800-c-38f712c2ff72 Best regards, -- Justin Stitt <justinstitt@...gle.com>
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