From: Andrew Morton <akpm@osdl.org>
To: Peter Waechtler <pwaechtler@mac.com>
Cc: linux-kernel@vger.kernel.org, torvalds@osdl.org
Subject: Re: [PATCH] coredump - as root not only if euid switched
Date: Thu, 22 Apr 2004 02:56:38 -0700 [thread overview]
Message-ID: <20040422025638.0bf86599.akpm@osdl.org> (raw)
In-Reply-To: <2899705.1082626850875.JavaMail.pwaechtler@mac.com>
Peter Waechtler <pwaechtler@mac.com> wrote:
>
> >(why are you trying to unlink the old file anyway?)
> >
>
> For security measure :O
> I tried on solaris: touch the core file as user, open it and wait, dump core
> as root -> nope, couldn't read the damn core - it was unlinked and created!
hm, OK. There's a window in which someone can come in and recreate the
file, but the open is using O_EXCL|O_CREATE so that seems safe enough.
next prev parent reply other threads:[~2004-04-22 9:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-22 9:40 Peter Waechtler
2004-04-22 9:56 ` Andrew Morton [this message]
2004-04-22 19:43 ` Peter Wächtler
2004-04-22 19:53 ` Chris Wright
2004-04-22 20:05 ` Linus Torvalds
-- strict thread matches above, loose matches on Subject: below --
2004-04-23 15:35 Albert Cahalan
2004-04-23 19:14 ` Peter Wächtler
2004-04-23 17:22 ` Albert Cahalan
2004-04-23 7:46 Peter Waechtler
2004-04-23 7:16 Peter Waechtler
2004-04-23 17:10 ` Chris Wright
2004-04-23 19:05 ` Peter Wächtler
2004-04-23 7:14 Peter Waechtler
2004-04-22 8:51 Peter Waechtler
2004-04-22 8:55 ` Andrew Morton
2004-04-21 19:20 Peter Wächtler
2004-04-22 1:18 ` Andrew Morton
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