Subject: Re: fstat syscalls buggy in -current ?
To: None <firstname.lastname@example.org>
From: David Laight <email@example.com>
Date: 05/15/2002 21:19:24
On Wed, May 15, 2002 at 12:44:52PM -0700, Bill Studenmund wrote:
> On Wed, 15 May 2002, Mihai Chelaru wrote:
> > On Wednesday 15 May 2002 01:01, Bill Studenmund wrote:
> > Yes, thanks. I was too lazy to check the fstat13 wrapper. The problem is that
> > on a NetBSD 1.5.2 (installed under a vmware 2.0.4) copyout worked to copy
> > between kernel-kernel. Could be because of vmware ?
> Probably. i386 has a shared-address space; the kernel is mapped into the
> top of each process's address space. So the addresses were valid, and
> vmware probably ignored the not-user-space check.
In that case it is particularly broken!
Definitely a serious security problem.....
David Laight: firstname.lastname@example.org