netdev - Re: [PATCH v7 16/18] seltests/landlock: add invalid input data test

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 11 Oct 2022 10:32:15 +0200
From:   Mickaël Salaün <mic@...ikod.net>
To:     "Konstantin Meskhidze (A)" <konstantin.meskhidze@...wei.com>
Cc:     willemdebruijn.kernel@...il.com, gnoack3000@...il.com,
        linux-security-module@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, anton.sirazetdinov@...wei.com
Subject: Re: [PATCH v7 16/18] seltests/landlock: add invalid input data test


On 11/10/2022 09:55, Konstantin Meskhidze (A) wrote:
> 
> 
> 10/10/2022 1:37 PM, Mickaël Salaün пишет:
>>
>> On 12/09/2022 19:22, Mickaël Salaün wrote:
>>>
>>> On 10/09/2022 22:51, Konstantin Meskhidze (A) wrote:
>>>>
>>>>
>>>> 9/6/2022 11:09 AM, Mickaël Salaün пишет:
>>>>>
>>>>> On 29/08/2022 19:03, Konstantin Meskhidze wrote:
>>>>>> This patch adds rules with invalid user space supplied data:
>>>>>>         - out of range ruleset attribute;
>>>>>>         - unhandled allowed access;
>>>>>>         - zero port value;
>>>>>>         - zero access value;
>>>>>>
>>>>>> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@...wei.com>
>>>>>> ---
>>>>>>
>>>>>> Changes since v6:
>>>>>> * Adds invalid ruleset attribute test.
>>>>>>
>>>>>> Changes since v5:
>>>>>> * Formats code with clang-format-14.
>>>>>>
>>>>>> Changes since v4:
>>>>>> * Refactors code with self->port variable.
>>>>>>
>>>>>> Changes since v3:
>>>>>> * Adds inval test.
>>>>>>
>>>>>> ---
>>>>>>      tools/testing/selftests/landlock/net_test.c | 66 ++++++++++++++++++++-
>>>>>>      1 file changed, 65 insertions(+), 1 deletion(-)
>>>>>>
>>>>>> diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c
>>>>>> index a93224d1521b..067ba45f58a5 100644
>>>>>> --- a/tools/testing/selftests/landlock/net_test.c
>>>>>> +++ b/tools/testing/selftests/landlock/net_test.c
>>>>>> @@ -26,9 +26,12 @@
>>>>>>
>>>>>>      #define IP_ADDRESS "127.0.0.1"
>>>>>>
>>>>>> -/* Number pending connections queue to be hold */
>>>>>> +/* Number pending connections queue to be hold. */
>>>>>
>>>>> Patch of a previous patch?
>>>>>
>>>>>
>>>>>>      #define BACKLOG 10
>>>>>>
>>>>>> +/* Invalid attribute, out of landlock network access range. */
>>>>>> +#define LANDLOCK_INVAL_ATTR 7
>>>>>> +
>>>>>>      FIXTURE(socket)
>>>>>>      {
>>>>>>      	uint port[MAX_SOCKET_NUM];
>>>>>> @@ -719,4 +722,65 @@ TEST_F(socket, ruleset_expanding)
>>>>>>      	/* Closes socket 1. */
>>>>>>      	ASSERT_EQ(0, close(sockfd_1));
>>>>>>      }
>>>>>> +
>>>>>> +TEST_F(socket, inval)
>>>>>> +{
>>>>>> +	struct landlock_ruleset_attr ruleset_attr = {
>>>>>> +		.handled_access_net = LANDLOCK_ACCESS_NET_BIND_TCP
>>>>>> +	};
>>>>>> +	struct landlock_ruleset_attr ruleset_attr_inval = {
>>>>>> +		.handled_access_net = LANDLOCK_INVAL_ATTR
>>>>>
>>>>> Please add a test similar to TEST_F_FORK(layout1,
>>>>> file_and_dir_access_rights) instead of explicitly defining and only
>>>>> testing LANDLOCK_INVAL_ATTR.
>>>>>
>>>>       Do you want fs test to be in this commit or maybe its better to add
>>>> it into "[PATCH v7 01/18] landlock: rename access mask" one.
>>
>> Just to make it clear, I didn't suggested an FS test, but a new network
>> test similar to layout1.file_and_dir_access_rights but only related to
>> the network. It should replace/extend the content of this patch (16/18).
>>
>    Ok. I will check out out "layout1.file_and_dir_access_rights" one.
> But anyway we need some test like TEST_F_FORK(layout1, with_net) and
> TEST_F_FORK(socket, with_fs) with mixed attributes as you suggested.

Right, you can add that to the main test patch.