Re: [PATCH 4.4 011/268] Revert "ipc/shm: Fix shmat mmap nil-page protection"

[Naresh Kamboju]

On 31 May 2018 at 13:06, Daniel Sangorrin
<daniel.sangorrin@xxxxxxxxxxxxx> wrote:
>> -----Original Message-----
>> From: 'Greg Kroah-Hartman' [mailto:gregkh@xxxxxxxxxxxxxxxxxxx]
> ..
>> Thanks for letting us know, but this was reported already.  See the
>> emails on lkml with the subject:
>>       Subject: Re: [PATCH 4.16 000/272] 4.16.13-stable review
>> from Davidlohr Bueso
>>       Message-ID: <20180528213039.yy2madue67njkmw5@linux-n805>
>>
>> where he discusses that the LTP test is incorrect and that the kernel
>> change is correct and that LTP is going to be fixed because of this.

My two cents,
If you are referring to cve-2017-5669.c
LTP test case is been fixed few hours ago by Rafael Tinoco,

- shm_addr = shmat(shm_id, ((void *)1), SHM_RND);
+ shm_addr = shmat(shm_id, ((void *)1), SHM_RND | SHM_REMAP);

LTP patch pull request and it is been merged.
https://github.com/linux-test-project/ltp/pull/324

>
> OK, thank you for the information!
>

- Naresh

> Regards,
> Daniel
>
>