* Rusty Russell <[email protected]> wrote:
> Thanks, I looked at the exec-shield patch. It has some rough
> edges (at least the 2.6.16 version I found).
the most recent one is always in the Fedora rawhide kernel RPM/SRPM.
(that means it closely tracks upstream.)
> Gerd's is basically a minimal subset of the exec-shield: we
> can go further towards exec-shield by using get_unmapped_area for the
> vsyscall page rather than nailing it above the stack, but it takes us
> from a 280-line patch to a 480-line patch.
certainly looks good to me! What are the changes you did to the
exec-shield implementation of vdso randomization? The patch seems
largely identical to the one in exec-shield.
(and it would be nice to do this on x86_64 too - exploits already exist
using the fixmapped VDSO there as a trampoline.)
Signed-off-by: Ingo Molnar <[email protected]>
Ingo
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