Re: [Intel-wired-lan] [PATCH 0/5] Ensure the copied buf is NULL terminated

[Marcin Szycik]

On 22.04.2024 18:41, Bui Quang Minh wrote:
> Hi everyone,
> 
> I found that some drivers contains an out-of-bound read pattern like this
> 
> 	kern_buf = memdup_user(user_buf, count);
> 	...
> 	sscanf(kern_buf, ...);
> 
> The sscanf can be replaced by some other string-related functions. This
> pattern can lead to out-of-bound read of kern_buf in string-related
> functions.
> 
> This series fix the above issue by replacing memdup_user with
> memdup_user_nul or allocating count + 1 buffer then writing the NULL
> terminator to end of buffer after userspace copying.
> 
> Thanks,
> Quang Minh.
> 
> Signed-off-by: Bui Quang Minh <minhquangbui99@xxxxxxxxx>
> ---
> Bui Quang Minh (5):
>       drivers/net/ethernet/intel-ice: ensure the copied buf is NULL terminated
>       drivers/net/brocade-bnad: ensure the copied buf is NULL terminated
>       drivers/scsi/bfa/bfad: ensure the copied buf is NULL terminated
>       drivers/scsi/qedf: ensure the copied buf is NULL terminated
>       drivers/s390/cio: ensure the copied buf is NULL terminated

Typically you don't include path to module in title, instead:
ice: ensure the copied buf is NULL terminated
bna: ensure the copied buf is NULL terminated
etc.

> 
>  drivers/net/ethernet/brocade/bna/bnad_debugfs.c | 4 ++--
>  drivers/net/ethernet/intel/ice/ice_debugfs.c    | 8 ++++----
>  drivers/s390/cio/cio_inject.c                   | 3 ++-
>  drivers/scsi/bfa/bfad_debugfs.c                 | 4 ++--
>  drivers/scsi/qedf/qedf_debugfs.c                | 2 +-
>  5 files changed, 11 insertions(+), 10 deletions(-)
> ---
> base-commit: ed30a4a51bb196781c8058073ea720133a65596f
> change-id: 20240422-fix-oob-read-19ae7f8f3711
> 
> Best regards,

Thanks,
Marcin