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    SubjectRe: Security patch for /proc

    On Tue, 31 Mar 1998, Jeremy Fitzhardinge wrote:

    > Hi all,
    > Here's a patch which prevents chrooted processes from escaping from
    > their chrooted area via /proc.


    I'm not sure I agree with this approach -- perhaps root processes should
    not be allowed to use the mount() syscall if root_dir != real_root. The
    other main source of nastiness is ptrace() -- this needs to be banned in a
    similar manner. There are other ways root could escape a chroot()
    jail, we need to think about them and eliminate them one by one.


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