Re: [PATCH] media: vidtv: Fix a wild pointer dereference in vidtv_channel_pmt_match_sections()

[Daniel Almeida <dwlsalmeida@xxxxxxxxx>]

Hi Zhou Qingyang, thanks for the patch.

Yes this is a real issue.

> +
> +					if (!tail) {
> +						vidtv_psi_pmt_stream_destroy(head);
> +						dev_warn_ratelimited(m->dev,
> +							"No enough memory for vidtv_psi_pmt_stream_init");
> +						return;
> +					}

Yes this is the right thing to do, as vidtv_psi_pmt_stream_destroy will 
free the stream chain and all descriptors associated with it, if any.

By then aborting out of this function, we will have a PMT section 
without any streams. This is OK if the allocation failed.

Reviewed-by Daniel Almeida <daniel.almeida@xxxxxxxxxxxxx>

Thanks,

-- Daniel