[PATCH 1/3] input: console: skip unmappable keys

[Sascha Hauer]

On Mon, Mar 29, 2021 at 08:18:08AM +0200, Ahmad Fatoum wrote:
> The input console is in charge of turning input events to barebox
> console keycodes. The keymap array it uses to do so has NR_KEYS
> entries. Keycodes with values >= NR_KEYS can thus not be mapped.
> Ignore them instead of evaluating arbitrary memory contents beyond
> the buffer.
> 
> Signed-off-by: Ahmad Fatoum <ahmad at a3f.at>
> ---
>  drivers/input/input.c | 3 +++
>  1 file changed, 3 insertions(+)

Applied, thanks

Sascha

> 
> diff --git a/drivers/input/input.c b/drivers/input/input.c
> index bcc8667417d9..1df52f56c84d 100644
> --- a/drivers/input/input.c
> +++ b/drivers/input/input.c
> @@ -165,6 +165,9 @@ static void input_console_notify(struct input_notifier *in,
>  	if (ic->modstate[4] || ic->modstate[5])
>  		modstate |= 1 << 2;
>  
> +	if (ev->code >= NR_KEYS)
> +		return;
> +
>  	if (modstate & (1 << 1)) {
>  		ascii = keycode_bb_keys[ev->code];
>  		ascii = ascii >= 'a' ? CTL_CH(ascii) : 0;
> -- 
> 2.30.0
> 
> 
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> 

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