Re: [patch] lockf(3) user-exploitable kernel panic

From: Brian F. Feldman (green_at_freebsd.org)
Date: 04/15/04

  • Next message: Dag-Erling Smørgrav: "Re: installing multiple kernels" 
    To: dodell@sitetronics.com
Date: Thu, 15 Apr 2004 10:53:30 -0400

    "dodell@sitetronics.com" <dodell@sitetronics.com> wrote:
    > >> sh has been fixed. I was under the impression that csh used libutil for
    > >> this (libutil has been fixed). I'll take a deeper look into shells in
    > >> base and in ports and figure out what changes I need to make there.
    > >> While I'm at it, I don't think it'd be a bad idea to go ahead and build
    > >> in the RLIMIT_SBSIZE to bash and bash2.
    > >
    > >If it is easy, it might be worthwhile to patch the shells to use
    > >libutil and submit those patches back to the maintainers.
    >
    > There are a huge number of shells to do this with. This subsystem
    > looks like somewhat of a kludge to me in this respect; the
    > functionality is plainly provided in libutil, while every shell (sh
    > and tcsh included) have their own implementations. limits(1)
    > even has statically compiled information about the limits for
    > every shell it is aware of (including sh, csh, tcsh, bash/bash2
    > and a good few others). I'll take a look at these later.

    Thanks for doing this work, Devon! The most important part is for
    /etc/login.conf to allow you to configure the maximum limits -- all the
    shell stuff is really secondary. 

    -- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\
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  • Next message: Dag-Erling Smørgrav: "Re: installing multiple kernels"