Re: [LTP] [linux-next:master] [icmp] 64db5933c7: ltp.cve-2020-25705.fail

Eric Dumazet <[email protected]> Wed, 11 Mar 2026 11:45:21 +0100

Newsgroups	dev.linux.lists.oe-lkp,it.linux.lists.ltp,org.kernel.vger.netdev
Message-ID	<CANn89iL8xwJxLMm+a-QqDUq_NeYSZBAMxvAAJ2_2X0tCd+J7kQ@mail.gmail.com>

On Wed, Mar 11, 2026 at 11:33 AM Cyril Hrubis <[email protected]> wrote:
>
> Hi!
> > I do not want to know what this test is doing or expecting.
> >
> > If it expects sysctls to have a precise value, it should set them ?
>
> The test is a CVE reproducer that checks if ICMP message ratelimiting is
> sufficiently randomized so that we do not leak information about the
> system.
>
> See the test source code:
>
> https://github.com/linux-test-project/ltp/blob/master/testcases/cve/icmp_rate_limit01.c
>

This test needs to be tweaked/changed.

It has been written with wrong assumption.

(icmp_msgs_burst == 50)

Thanks.