full-disclosure - [SECURITY] [DSA-403-1] userland can access Linux kernel memory

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Message-ID: <20031202164309.GB6056@deneb.enyo.de>
From: fw at deneb.enyo.de (Florian Weimer)
Subject: [SECURITY] [DSA-403-1] userland can access Linux kernel memory

Wojciech Purczynski wrote:

> This is not an integer overflow bug. do_brk() doesn't verify its arguments
> at all, allowing to create arbitrarily large virtual memory mapping (vma)
> consuming kernel memory.

At least this explains why it wasn't found by the Stanford checker tool.
Thanks.