Messages in this thread | | | Date | Sat, 17 Apr 1999 16:08:57 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH] Capabilities in elf |
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Hi!
> > Here is next version, this one is believed NOT to contain security > > hole. Please take a look, and comment i.e. post me things like "GREAT! > > this is going to be included in 2.2.6". > > Few comments: > FPUCW does not have to be exported to userland, unless it changes from the > defaults glibc is aware of for the different architectures. That's
Sorry, part of other patch escaped me. I should have reversed it. I did that now.
> has been decided between Linus and Ulrich, so there is no need to muck with > that in your patch. > Allocating such low PT_* value is really asking for trouble. One should use > some high PT_* value in the allowable range.
Ook. 0xca9ab1e used as magic :-).
> I don't think Linus will take the patch if you accept there \x7fFLE as magic, > it is really a hackish solution. No userland program will be able to cope > with such executables.
I know. But do you have idea on other way to make executables unexecutable for 2.0.x kernel?
> And of course, you'd need to remove all those printks from there to actually > send it to Linus anyway.
:-) Of course. I one to have working capability, setter, first; than to submit it to Linus. Jeremy Fitzhardinge already mailed me some code to edit elf, I'll take a look.
Pavel -- I'm really pavel@atrey.karlin.mff.cuni.cz. Pavel Look at http://atrey.karlin.mff.cuni.cz/~pavel/ ;-).
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