Date: Tue, 19 May 1998 07:25:49 -0700 From: David Greenman <dg@root.com> To: Greg Lehey <grog@lemis.com> Cc: Tor Egge <tegge@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG Subject: Re: cvs commit: src/sys/i386/i386 machdep.c vm_machdep.c src/sys/i386/include ptrace.h src/sys/kern sys_process.c src/sys/miscfs/procfs procfs.h procfs_mem.c procfs_vnops.c Message-ID: <199805191425.HAA21990@implode.root.com> In-Reply-To: Your message of "Tue, 19 May 1998 11:17:05 %2B0930." <19980519111705.R427@freebie.lemis.com>
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>On Mon, 18 May 1998 at 17:00:15 -0700, Tor Egge wrote: >> tegge 1998/05/18 17:00:15 PDT >> >> Modified files: >> sys/i386/i386 machdep.c vm_machdep.c >> sys/i386/include ptrace.h >> sys/kern sys_process.c >> sys/miscfs/procfs procfs.h procfs_mem.c procfs_vnops.c >> Log: >> Disallow reading the current kernel stack. Only the user structure and >> the current registers should be accessible. >> Reviewed by: David Greenman <dg@root.com> > >What's the rationale for this? How will it affect debuggers? Security - the kernel stack must not be accessible by the user process since it might contain sensitive data. The above should not affect debuggers. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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