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RE: [suse-security] ulimit -v workaround for the do_brk() bug does not work
Erik Hensema <erik@xxxxxxxxxxx> wrote:
> Maybe this has been discussed earlier today on this list,
> but I've just joined it.
> I was told that doing a 'limit -v 2097151' would work around
> the do_brk() bug. Unfortunately it does not :-(
> The sample exploit posted on bugtraq manages to reboot
> my SuSE 8.2 machine (standard kernel) despite the ulimit.
> Erik Hensema (erik@xxxxxxxxxxx)
Roman in hiw original post suggested two other things
needed to be done to install this work around:
Add the line
ulimit -v 2097151
as the second lines of /etc/init.d/rc and /etc/profile,
and then execute the command itself in your shell
and then restart all daemons that allow logins
(xdm, sshd, inetd/xinetd, ...).
Alternatively, simply reboot after adding the lines to above files:
Roman said this workaround is Courtesy of Solar Designer.
(Note: The reboot is in lieu of restarting
all daemons and not the editing of /etc/init.d/rc and /etc/profile.)
Further Note: the above limit -v # was changed to reflect
Roaman's second post.)
It would be best to Read, the entire thread
"RE: [suse-security] Bugs on Kernel 2.4" at:
Redhat has already put up their patch rpm,
I suspect SuSe's will be up soon, making this work around moot.
Hope this helps,
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