From: "H. Peter Anvin" <hpa@zytor.com>
To: Kees Cook <keescook@chromium.org>, linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Rob Landley <rob@landley.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, Jianguo Wu <wujianguo@huawei.com>,
Andy Honig <ahonig@google.com>,
David Rientjes <rientjes@google.com>,
linux-doc@vger.kernel.org
Subject: Re: [PATCH v2] x86, kaslr: randomize module base load address
Date: Tue, 25 Feb 2014 16:38:40 -0800 [thread overview]
Message-ID: <530D3790.301@zytor.com> (raw)
In-Reply-To: <20140226003403.GA26737@www.outflux.net>
On 02/25/2014 04:34 PM, Kees Cook wrote:
> Randomize the load address of modules in the kernel to make kASLR
> effective for modules. Modules can only be loaded within a particular
> range of virtual address space. This patch adds 10 bits of entropy to
> the load address by adding 1-1024 * PAGE_SIZE to the beginning range
> where modules are loaded.
So the question still remains: why not randomize for each module?
-hpa
prev parent reply other threads:[~2014-02-26 0:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-26 0:34 [PATCH v2] x86, kaslr: randomize module base load address Kees Cook
2014-02-26 0:38 ` H. Peter Anvin [this message]
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