(ITS#6907) openldap 2.4.25 segfaults when using apache directory studio to rename objects

[openldap@bromberger.com]

Full_Name: Seth
Version: 2.4.25
OS: Linux (Ubuntu) 2.6.35.4
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (173.13.140.242)


Using Apache Directory Studio to interface with hdb-based openldap server via
TLS. Moving a DN from one ou to another crashes slapd. The move (the first one
if there are multiples) appears to work before slapd segfaults. An example in
the logfile:


Apr 12 17:17:52 ldap slapd[11278]: conn=1000 op=13 MODRDN
dn="uid=someuserid,ou=Organizations,dc=example,dc=org"
Apr 12 17:17:52 ldap kernel: [974579.184525] slapd[11281]: segfault at
7f0bdfab7ff8 ip 000000000049af05 sp 00007f0bdfab8000 error 6 in
slapd[400000+19e000]

This is 100% reproducible. Also affects 2.4.23-0ubuntu3.5 (ubuntu package) - I
upgraded from source to try to work around this bug.