Messages in this thread | | | Date | Sat, 23 Jun 2007 20:01:29 +0200 (CEST) | From | Jan Engelhardt <> | Subject | Re: [PATCH] Check files' signatures before doing suid/sgid [2/4] |
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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 -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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