Re: [PATCH] Check files' signatures before doing suid/sgid [2/4]
From: Jan Engelhardt
Date: Sat Jun 23 2007 - 14:01:37 EST
On Jun 21 2007 19:46, Alexander Wuerstlein wrote:
>
>If a process uses read() it needs some executable and writable memory. We do
>check for this in mprotect(). There is a problem with the i386-architecture,
>because it allows execution of any readable page (except with newer
>processors). But beyond that ugliness of i386, it should not be possible to
>execute anything without us noticing it (hopefully).
r and x together is not a problem IMHO.
Jan
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