OpenBSD – pinning all system calls

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  • src

    Read-only git conversion of OpenBSD's official CVS src repository. Pull requests not accepted - send diffs to the tech@ mailing list.

    • > I don't know how they define `MAX`, but I'm guessing it's a typical "a>b?a:b"

    Indeed: https://github.com/openbsd/src/blob/master/sys/sys/param.h#L...

    > Then `SYS_kbind` seems to be a signed int.

    It's an untyped #define: https://github.com/openbsd/src/blob/master/sys/sys/syscall.h...

    I believe your whole analysis is correct, that running an elf file with an openbsd.syscalls entry with .sysno > INT_MAX will allow an out-of-bounds write.

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