2023-06-15 07:59:51

by Kalle Valo

[permalink] [raw]
Subject: Re: wifi: mt7601u: replace strlcpy() with strscpy()

Azeem Shaikh <[email protected]> wrote:

> strlcpy() reads the entire source buffer first.
> This read may exceed the destination size limit.
> This is both inefficient and can lead to linear read
> overflows if a source string is not NUL-terminated [1].
> In an effort to remove strlcpy() completely [2], replace
> strlcpy() here with strscpy().
>
> Direct replacement is safe here since DEV_ASSIGN is only used by
> TRACE macros and the return values are ignored.
>
> [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
> [2] https://github.com/KSPP/linux/issues/89
>
> Signed-off-by: Azeem Shaikh <[email protected]>
> Reviewed-by: Kees Cook <[email protected]>

Patch applied to wireless-next.git, thanks.

7edbd53a58a8 wifi: mt7601u: replace strlcpy() with strscpy()

--
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches