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Linux 4.6 Will Improve The Security Of 32-bit Programs

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  • Linux 4.6 Will Improve The Security Of 32-bit Programs

    Phoronix: Linux 4.6 Will Improve The Security Of 32-bit Programs

    Besides the 4.6 scheduler updates, another interesting pull request today by Ingo Molnar are the mm updates...

    http://www.phoronix.com/scan.php?pag...MM-32-bit-ASLR

  • #2
    Will this make PAX obsolete ?

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    • #3
      Nope. ASLR is only a part of it. Non executable memory (NX bit) the other part. And AFAIK the NX bit is only supported for x86_64 in linux? But I'm not sure about that.

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      • #4
        Originally posted by droste View Post
        Nope. ASLR is only a part of it. Non executable memory (NX bit) the other part. And AFAIK the NX bit is only supported for x86_64 in linux? But I'm not sure about that.

        It emulates the nx bit for i386.

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        • #5
          Originally posted by droste View Post
          Nope. ASLR is only a part of it. Non executable memory (NX bit) the other part. And AFAIK the NX bit is only supported for x86_64 in linux? But I'm not sure about that.
          Nope, have had NX in 32bit Linux at price of an extra level of page table entries (like PAE for more than 4GiB physical memory).

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