Re: [PATCH v2] wifi: iwlwifi: fw: replace deprecated strncpy with strscpy_pad

[Kalle Valo]

Kees Cook <keescook@xxxxxxxxxxxx> writes:

> On Thu, Oct 19, 2023 at 05:44:59PM +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.
>> 
>> Based on the deliberate `sizeof(dest) ... - 1` pattern we can see that
>> both dump_info->dev_human_readable and dump_info->bus_human_readable are
>> intended to be NUL-terminated.
>> 
>> Moreover, since this seems to cross the file boundary let's NUL-pad to
>> ensure no behavior change.
>> 
>> strscpy_pad() covers both the NUL-termination and NUL-padding, let's use
>> it.
>> 
>> Link:
>> https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
>> [1]
>> Link: https://github.com/KSPP/linux/issues/90
>> Cc: linux-hardening@xxxxxxxxxxxxxxx
>> Signed-off-by: Justin Stitt <justinstitt@xxxxxxxxxx>
>
> Thread ping. Can the wireless folks please pick this up?

Yeah, I'll take this directly to wireless-next.

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