Re: [linux-security] Re: kernel bug -> security problem

Massimiliano Liccardo (mliccardo@tim.it)
Mon, 28 Oct 1996 10:01:28 +0100 (MET)


On Fri, 25 Oct 1996, M Shariful Anam wrote:

> On Thu, 24 Oct 1996 pderosa@mbox.vol.it wrote:
> > > > I've just received e-mail about a bug in the kernel which causes linux
> > > > to reboot when the following ping is issued from windowz 95 : "ping -l
> > > > 65510 linux.box.IP.address" .. I tried it and sure enough linux dies
> > > > quickly and without any warning ...
> > >
> > > Sorry for a late reply, but I just tested this on our LAN, from Win95 to
> > > linux 1.2.13 and it doesn't crash.
> >
> > Maybe it happens on newer kernels ?
>
> That is my question. Has anyone faced this trouble with Linux kernel <
> 2.x.x?
>
> [REW: I also see different behaviour than what a friend of mine sees,
> and we are both running > 2.0.20 kernels]
>
>
I tested this "bug" with different kernels > 2.0.x, this is my report:

- ping -l 65510 linux_box (2.0.4) from Win95 , no problem , system log:
Kernel:ICMP failed ckecksum from Win95_box
- ping l 65510 linux_box (2.0.7/2.0.23) from Win95 - no services avaible
more, I can't connect (no telnet, no ftp, no ping), my monitor goes crazy
with a mega list of Hex numbers.

Max Liccardo mliccardo@tim.it (at work)
mc7155@mclink.it (at home)

"..fatti non foste per viver come bruti,
ma per seguir virtute e cAnoscenza .."