On Wed, 04 May 2016 08:27:37 +0200,
Dan Carpenter wrote:
>
> "header->number" can be up to USHRT_MAX and it comes from the ioctl so
> it needs to be capped.
>
> Signed-off-by: Dan Carpenter <[email protected]>
Applied, thanks.
Takashi
>
> diff --git a/sound/isa/wavefront/wavefront_synth.c
> b/sound/isa/wavefront/wavefront_synth.c
> index 69f76ff..718d5e3 100644
> --- a/sound/isa/wavefront/wavefront_synth.c
> +++ b/sound/isa/wavefront/wavefront_synth.c
> @@ -785,6 +785,9 @@ wavefront_send_patch (snd_wavefront_t *dev,
> wavefront_patch_info *header)
> DPRINT (WF_DEBUG_LOAD_PATCH, "downloading patch %d\n",
> header->number);
>
> + if (header->number >= ARRAY_SIZE(dev->patch_status))
> + return -EINVAL;
> +
> dev->patch_status[header->number] |= WF_SLOT_FILLED;
>
> bptr = buf;
> @@ -809,6 +812,9 @@ wavefront_send_program (snd_wavefront_t *dev,
> wavefront_patch_info *header)
> DPRINT (WF_DEBUG_LOAD_PATCH, "downloading program %d\n",
> header->number);
>
> + if (header->number >= ARRAY_SIZE(dev->prog_status))
> + return -EINVAL;
> +
> dev->prog_status[header->number] = WF_SLOT_USED;
>
> /* XXX need to zero existing SLOT_USED bit for program_status[i]
> @@ -898,6 +904,9 @@ wavefront_send_sample (snd_wavefront_t *dev,
> header->number = x;
> }
>
> + if (header->number >= WF_MAX_SAMPLE)
> + return -EINVAL;
> +
> if (header->size) {
>
> /* XXX it's a debatable point whether or not RDONLY semantics
>
