ACK/Cmt: [SRU][F/J/K/L][PATCH 0/1] CVE-2023-31084

[Yuxuan Luo]

On 7/28/23 03:13, Roxana Nicolescu wrote:
>
> On 27/07/2023 21:57, Yuxuan Luo wrote:
>> [Impact]
>> It was discovered that the DVB Core driver in the Linux kernel did not
>> properly handle locking events in certain situations. A local attacker
>> could use this to cause a denial of service (kernel deadlock).
>>
>> [Backport]
>> Clean cherry-pick.
>>
>> [Test]
>> Smoke tested against dvb-fe-tool.
> Maybe give more details how you tested it. Smoke tested does not say 
> much to me.
Install `vidtv` (Virtual Digital TV Driver) to mimic a physical DVB 
device, then use the `dvb-fe-tool` compiled from 
(v4l-utils)[https://github.com/gjasny/v4l-utils] to detect and dump 
information of the vidtv; since no error nor suspicious log found during 
these operations, considered the smoke test succeeded.
>>
>> [Potential Regression]
>> Expect minimal regression potential.
>>
>>
>> Takashi Iwai (1):
>>    media: dvb-core: Fix kernel WARNING for blocking operation in
>>      wait_event*()
>>
>>   drivers/media/dvb-core/dvb_frontend.c | 16 ++++++++++++----
>>   1 file changed, 12 insertions(+), 4 deletions(-)
>>
>>
> Acked-by: Roxana Nicolescu <roxana.nicolescu at canonical.com>
>