[Bug libc/661] New: getgrouplist memory corruption

["kukuk at suse dot de" <sourceware-bugzilla at sources dot redhat dot com>]

If you call getgrouplist with ngroups=0 as argument to find out, how 
big the buffer needs to be, it will corrupt the stack. The problem is, 
that internal_getgrouplist will always add the main group at first, 
without checking for enough space.

-- 
           Summary: getgrouplist memory corruption
           Product: glibc
           Version: 2.3.4
            Status: NEW
          Severity: critical
          Priority: P2
         Component: libc
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: kukuk at suse dot de
                CC: glibc-bugs at sources dot redhat dot com


http://sources.redhat.com/bugzilla/show_bug.cgi?id=661

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