Re: [PATCH 0/3] binder: Prevent untranslated sender data from being copied to target

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Nov 23, 2021 at 11:17:34AM -0800, Todd Kjos wrote:
> Binder copies transactions directly from the sender buffer
> to the target buffer and then fixes up BINDER_TYPE_PTR and
> BINDER_TYPE_FDA objects. This means there is a brief time
> when sender pointers and fds are visible to the target
> process.
> 
> This series reworks the the sender to target copy to
> avoid leaking any untranslated sender data from being
> visible in the target.
> 
> Todd Kjos (3):
>   binder: defer copies of pre-patched txn data
>   binder: read pre-translated fds from sender buffer
>   binder: avoid potential data leakage when copying txn
> 
>  drivers/android/binder.c | 442 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------
>  1 file changed, 387 insertions(+), 55 deletions(-)

Are these changes needed now in 5.16-final and also in stable kernels?

Or can they wait until 5.17-rc1?

thanks,

greg k-h