linux-hardening - Re: [PATCH] qlcnic: replace deprecated strncpy with strscpy

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Date: Thu, 30 Nov 2023 14:00:28 -0800
From: Kees Cook <keescook@...omium.org>
To: Shahed Shaikh <shshaikh@...vell.com>,
	Manish Chopra <manishc@...vell.com>,
	GR-Linux-NIC-Dev@...vell.com,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Justin Stitt <justinstitt@...gle.com>
Cc: Kees Cook <keescook@...omium.org>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH] qlcnic: replace deprecated strncpy with strscpy

On Thu, 12 Oct 2023 19:44:29 +0000, Justin Stitt wrote:
> strncpy() is deprecated for use on NUL-terminated destination strings
> [1] and as such we should prefer more robust and less ambiguous string
> interfaces.
> 
> We expect fw_info->fw_file_name to be NUL-terminated based on its use
> within _request_firmware_prepare() wherein `name` refers to it:
> |       if (firmware_request_builtin_buf(firmware, name, dbuf, size)) {
> |               dev_dbg(device, "using built-in %s\n", name);
> |               return 0; /* assigned */
> |       }
> ... and with firmware_request_builtin() also via `name`:
> |       if (strcmp(name, b_fw->name) == 0) {
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] qlcnic: replace deprecated strncpy with strscpy
      https://git.kernel.org/kees/c/f8bef1ef8095

Take care,

-- 
Kees Cook