Re: [PATCH] ASoC: SOF: ensure all fields in header are zero'd before copying back to userspace

[Colin Ian King]

On 22/04/2020 12:45, Dan Carpenter wrote:
> On Wed, Apr 22, 2020 at 12:24:17PM +0100, Colin King wrote:
>> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>>
>> Field header.tlv is uninitialized and being copied back to userspace
>         ^^^^^^^^^^
> header.tlv is a zero element array so it doens't have any stack data.

Thanks Dan, I totally overlooked that. That's another class if issues I
need to triage correctly.

> 
>> and hence leaking data from the stack to userspace.  Fix this by
>> ensuring the header structure is zero'd.
> 
> regards,
> dan carpenter
> 
>