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Old 10-17-2005, 11:16 AM   #1
Registered: Nov 2004
Location: Florida, USA
Distribution: Debian, Redhat
Posts: 416

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Issues with NIS and netgroups

First of all, the problem:

With libc6 version 2.3.5-6, a problem has arisen in which if you are using NIS with netgroups, and restrict the logons of people to specific netgroups, i.e. putting the following in /etc/passwd:


If you try to login as a user in that netgroup, you are immediately bumped off the machine. When su'ed into a user in that netgroup from a seperate acccount that is working, you get the following:

teuber:/home# su - noam
-su: nss_nis/nis-netgrp.c:79: _nss_nis_setnetgrent: Assertion `malloc_usable_size (netgrp->data) >= len + 1' failed.

This problem has been documented on the Debian buglist here:

I was just wondering if there is anyone out there that has found a workaround for this particular problem that does not include simply wiping out netgroup restrictions for the time being.


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