Some implementations of the getpwuid_r call are known to have a bug that makes it non-threadsafe.
Currently known to be broken are:
- Linux SSSD NSS module less than 1.5.1
- RHEL 6.0:
- See https://bugzilla.redhat.com/show_bug.cgi?id=680367
- Fixed by upgrading to 6.1 and/or applying http://rhn.redhat.com/errata/RHSA-2011-0560.html
- RHEL 6.0:
- Vintela Authentication Services prior to 3.5.2-80