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Date: Tue, 8 Dec 2020 15:30:30 +0800
From: - Nop <>
To: John Haxby <>
Subject: Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2


CVE-2020-27830 has been assigned to this issue.


On Mon, Dec 7, 2020 at 6:23 PM John Haxby <> wrote:

> > On 7 Dec 2020, at 02:20, Shisong Qin <> wrote:
> >
> > Recently we found another NULL-ptr deref BUG in spk_ttyio.c in the latest
> > Linux kernel(5.9.11 is the latest at that now). In the
> > spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth
> > without checking whether it is NULL or not, and may lead to a NULL-ptr
> > deref crash.
> Did you ask for a CVE for bug?
> jch

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