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Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2

From: John Haxby <john.haxby () oracle com>
Date: Mon, 7 Dec 2020 10:23:45 +0000

On 7 Dec 2020, at 02:20, Shisong Qin <qinshisong1205 () gmail com> 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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Current thread:

Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2 Shisong Qin (Dec 06)
- Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2 John Haxby (Dec 07)
  - Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2 - Nop (Dec 07)
    - Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2 Marcus Meissner (Dec 07)
  - Re: Linux kernel NULL-ptr deref bug in spk_ttyio_receive_buf2 - Nop (Dec 08)