From: wzt wzt <wzt.wzt@gmail.com>
To: Eric Paris <eparis@redhat.com>
Cc: linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org, jmorris@namei.org,
eparis@parisplace.org
Subject: Re: [RFC][PATCH] Security: fix cap_file_mmap() off-by-one error to avoid kernel null pointer exploit
Date: Thu, 15 Apr 2010 20:27:45 +0800 [thread overview]
Message-ID: <n2h628d1651004150527k5db402a3rd66292aa58a8c595@mail.gmail.com> (raw)
In-Reply-To: <1271333540.3042.17.camel@dhcp235-240.rdu.redhat.com>
> The fix to the comment is fine, but you missed the point ENTIRELY.
i'll send a new patch only fix the comment.
> The WHOLE point of being able to set dac_mmap_min_addr == 0 is so you can
> disable the protection. There exist tools (wine and dosemu) which NEED
> to map the 0 page.
thanks for explain it, i really understood wrong before.
prev parent reply other threads:[~2010-04-15 12:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-15 5:51 wzt.wzt
2010-04-15 12:12 ` Eric Paris
2010-04-15 12:27 ` wzt wzt [this message]
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