From: Keith Owens <kaos@ocs.com.au>
To: linux-kernel@vger.kernel.org
Subject: Re: Local DoS on single_open?
Date: Thu, 11 Sep 2003 17:04:48 +1000 [thread overview]
Message-ID: <5196.1063263888@kao2.melbourne.sgi.com> (raw)
In-Reply-To: Your message of "Thu, 11 Sep 2003 14:51:09 +1000." <3F5FFF3D.9040707@cyberone.com.au>
On Thu, 11 Sep 2003 14:51:09 +1000,
Nick Piggin <piggin@cyberone.com.au> wrote:
>Keith Owens wrote:
>
>>single_open() requires the kernel to kmalloc a buffer which lives until
>>the userspace caller closes the file. What prevents a malicious user
>>opening the same /proc entry multiple times, allocating lots of kmalloc
>>space and causing a local DoS?
>>
>>
>
>ulimit?
ulimit has no effect on kmalloc usage.
next prev parent reply other threads:[~2003-09-11 7:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-11 4:42 Local DoS on single_open? Keith Owens
2003-09-11 4:51 ` Nick Piggin
2003-09-11 7:04 ` Keith Owens [this message]
2003-09-11 7:29 ` viro
2003-09-11 4:55 ` viro
2003-09-11 7:26 ` Keith Owens
2003-09-11 7:32 ` viro
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