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You just described the old method Linux used that was vulnerable to info leaks iirc and why it now a vDSO
by nwmcsween 10y ago
You just described the old method Linux used that was vulnerable to info leaks iirc and why it now a vDSO
- binarycrusader 10y agoThe Solaris method doesn't have the problem the other implementation did.
- nwmcsween 10y agoHow does solaris find the page? If it's mapped to a fixed address then it does have that problem.
- binarycrusader 10y agoThe default is to map the shared page to a randomized, available address within the process space. libc gets the address of the page by looking it up in an auxiliary vector table that belongs to the process.