linux-kernel - Re: [PATCH v2] Fix buffer overrun in HID-SENSOR name string

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Message-ID: <20230313230712.6xboy3w5ocrvj3vn@intel.intel>
Date:   Tue, 14 Mar 2023 00:07:12 +0100
From:   Andi Shyti <andi.shyti@...nel.org>
To:     Todd Brandt <todd.e.brandt@...el.com>
Cc:     linux-input@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, todd.e.brandt@...ux.intel.com,
        srinivas.pandruvada@...ux.intel.com, jic23@...nel.org,
        jikos@...nel.org, p.jungkamp@....net
Subject: Re: [PATCH v2] Fix buffer overrun in HID-SENSOR name string

Hi Todd,

On Mon, Mar 13, 2023 at 03:06:53PM -0700, Todd Brandt wrote:
> On some platforms there are some platform devices created with
> invalid names. For example: "HID-SENSOR-INT-020b?.39.auto" instead
> of "HID-SENSOR-INT-020b.39.auto"
> 
> This string include some invalid characters, hence it will fail to
> properly load the driver which will handle this custom sensor. Also
> it is a problem for some user space tools, which parse the device
> names from ftrace and dmesg.
> 
> This is because the string, real_usage, is not NULL terminated and
> printed with %s to form device name.
> 
> To address this, we initialize the real_usage string with 0s.
> 
> Philipp Jungkamp created this fix, I'm simply submitting it. I've
> verified it fixes bugzilla issue 217169
> 
> Reported-and-tested-by: Todd Brandt <todd.e.brandt@...ux.intel.com>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217169
> Signed-off-by: Todd Brandt <todd.e.brandt@...el.com>

Why is not Philip in the SoB list?

Anyway the original patch made it to stable, so:

Fixes: 98c062e82451 ("HID: hid-sensor-custom: Allow more custom iio sensors")
Cc: stable@...r.kernel.org

and with those you can add:

Reviewed-by: Andi Shyti <andi.shyti@...nel.org>

Andi