Christopher Brannon, le Tue 10 Sep 2013 18:21:18 -0700, a écrit :
> When a new voice is selected, we set volume and pitch appropriate for
> the voice. We need to use the numeric index corresponding to the
> voice when indexing into the volume and pitch tables, rather than
> the raw user input that was used to select the voice.
> Note that using the raw input can also lead to an invalid memory read
> in the case of invalid or malicious user input.
>
> Signed-off-by: Christopher Brannon <ch...@the-brannons.com>
Acked-by: Samuel Thibault <samuel.thiba...@ens-lyon.org>
> ---
> drivers/staging/speakup/kobjects.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/staging/speakup/kobjects.c
> b/drivers/staging/speakup/kobjects.c
> index 51bdea3..55aeeb2 100644
> --- a/drivers/staging/speakup/kobjects.c
> +++ b/drivers/staging/speakup/kobjects.c
> @@ -652,7 +652,10 @@ ssize_t spk_var_store(struct kobject *kobj, struct
> kobj_attribute *attr,
> * If voice was just changed, we might need to reset our default
> * pitch and volume.
> */
> - if (strcmp(attr->attr.name, "voice") == 0) {
> + if (strcmp(attr->attr.name, "voice") == 0 &&
> + (ret == 0 || ret == -ERESTART)) {
> + var_data = param->data;
> + value = var_data->u.n.value;
> if (synth && synth->default_pitch) {
> param = spk_var_header_by_name("pitch");
> if (param) {
> --
> 1.8.1.5
>
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