Re: [PATCH 09/64] staging: rtl8723bs: Avoid field-overflowing memcpy()

Greg Kroah-Hartman
2021-07-28T05:46:39Z

On Tue, Jul 27, 2021 at 01:58:00PM -0700, Kees Cook wrote:
> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> field bounds checking for memcpy(), memmove(), and memset(), avoid
> intentionally writing across neighboring fields.
>
> Adjust memcpy() destination to be the named structure itself, rather than
> the first member, allowing memcpy() to correctly reason about the size.
>
> "objdump -d" shows no object code changes.
>
> Signed-off-by: Kees Cook <keescook@chromium.org>
> ---
> drivers/staging/rtl8723bs/core/rtw_mlme.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>