Red Hat Directory Server crash when deleting and adding a userpassword attribute

Solution Verified - Updated -

Issue

In some scenario, Red Hat directory Server 9.0's LDAP service may become unavilable when a user tries to change a password, with the following system error log entry:

Apr 11 08:53:46 hostname1 kernel: ns-slapd[5925]: segfault at 0 ip 00007fab1d8a5cb2 sp 00007faaf19e36f0 error 4 in libback-ldbm.so[7fab1d864000+95000]

Environment

Red Hat Enterprise Linux 6
Red Hat Directory Server 9.0 with

389-ds-base-1.2.11.15-11.el6_4.x86_64
389-ds-base-1.2.11.15-14.el6_4.x86_64

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