In message <[EMAIL PROTECTED]>, Matthew Dillon w
rites:
> Hmm. While tracking down a null mount issue I think I might have
> come across a potentially serious problem with jail. It seems to
> me that it would be possible for someone inside a jailed environment
> to 'steal' pty's, tty's, or the tty side of a pty that is being
> used from within other jails or by processes outside the jail. Has
> this ever come up before?
There has always been code in kern/tty_pty.c which makes sure that the
master and slave have the same prison:
} else if (pti->pt_prison != td->td_ucred->cr_prison) {
return (EBUSY);
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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FreeBSD committer | BSD since 4.3-tahoe
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