Messages in this thread | | | From | (Alan Cox) | Subject | Re: Linux Buffer Overflow Security Exploits | Date | Wed, 3 Mar 1999 22:24:44 +0000 (GMT) |
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> I suppose my original question could be boiled down into: > > Does a Linux (and/or other Unix) process inhabit a single read/write/execute > memory segment?
No. The executable image is read only or copy-on-write. The stack however has to readable (obviously) and x86 has a problem with page level permissions for execute only (it hasnt got them)
Forget about segments, intel has been trying to de-invent them since the 386.
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