On Wed, 28 Aug 2013, Jiri Kosina wrote:
> From: Kees Cook <keescook@xxxxxxxxxxxx>
>
> Defensively check that the field to be worked on is not NULL.
Applied.
>
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxx
> ---
> drivers/hid/hid-core.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
> index 55798b2..192be6b 100644
> --- a/drivers/hid/hid-core.c
> +++ b/drivers/hid/hid-core.c
> @@ -1206,7 +1206,12 @@ EXPORT_SYMBOL_GPL(hid_output_report);
>
> int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
> {
> - unsigned size = field->report_size;
> + unsigned size;
> +
> + if (!field)
> + return -1;
> +
> + size = field->report_size;
>
> hid_dump_input(field->report->device, field->usage + offset, value);
>
> --
> Jiri Kosina
> SUSE Labs
>
--
Jiri Kosina
SUSE Labs
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