openldap-bugs June 2025

openldap-bugs@openldap.org

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[Issue 9731] New: startup messages still go to syslog when logfile-only is on
by openldap-its＠openldap.org 25 Nov '25

25 Nov '25

https://bugs.openldap.org/show_bug.cgi?id=9731 Issue ID: 9731 Summary: startup messages still go to syslog when logfile-only is on Product: OpenLDAP Version: 2.6.0 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- When setting logfile-only on, slapd still logs its startup message to syslog: Oct 29 21:07:47 u18test slapd[18534]: @(#) $OpenLDAP: slapd 2.6.0 (Oct 29 2021 05:12:17) $#012#011openldap This is useful information to have consolidated into the specified logfile. Note that: 617c62a3.16f03fdb 0x7f9325ed67c0 slapd starting does make it to the logfile. However, it would be useful to have the build date and version in the specified logfile. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9726] New: Admin guide and man pages need better documentation on disabling syslog
by openldap-its＠openldap.org 11 Nov '25

11 Nov '25

https://bugs.openldap.org/show_bug.cgi?id=9726 Issue ID: 9726 Summary: Admin guide and man pages need better documentation on disabling syslog Product: OpenLDAP Version: 2.6.0 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: documentation Assignee: bugs(a)openldap.org Reporter: quanah(a)openldap.org Target Milestone: --- 2.6.0 added the new feature allowing using a logfile for all debug/loglevel messages and bypassing syslog entirely. However, there is no documentation on the new settings or examples of how to do this in the admin guide, and the man page sections on the new parameters for the logfile side do not note at when/how they enable bypassing syslog. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9564] New: Race condition with freeing the spilled pages from transaction
by openldap-its＠openldap.org 04 Nov '25

04 Nov '25

https://bugs.openldap.org/show_bug.cgi?id=9564 Issue ID: 9564 Summary: Race condition with freeing the spilled pages from transaction Product: LMDB Version: 0.9.29 Hardware: Other OS: Mac OS Status: UNCONFIRMED Severity: normal Priority: --- Component: liblmdb Assignee: bugs(a)openldap.org Reporter: kriszyp(a)gmail.com Target Milestone: --- Created attachment 825 --> https://bugs.openldap.org/attachment.cgi?id=825&action=edit Free the spilled pages and dirty overflows before unlocking the write mutex The spilled pages (a transaction's mt_spill_pgs) is freed *after* a write transaction's mutex is unlocked (in mdb.master3). This can result in a race condition where a second transaction can start and subsequently assign a new mt_spill_pgs list to the transaction structure that it reuses. If this occurs after the first transaction unlocks the mutex, but before it performs the free operation on mt_spill_pgs, then the first transaction will end up calling a free on the same spilled page list as the second transaction, resulting in a double free (and crash). It would seem to be an extremely unlikely scenario to actually happen, since the free call is literally the next operation after the mutex is unlocked, and the second transaction would need to make it all the way to the point of saving the freelist before a page spill list is likely to be allocated. Consequently, this probably has rarely happened. However, one of our users (see https://github.com/DoctorEvidence/lmdb-store/issues/48 for the discussion) has noticed this occurring, and it seems that it may be particularly likely to happen on MacOS on the new M1 silicon. Perhaps there is some peculiarity to how the threads are more likely to yield execution after a mutex unlock, I am not sure. I was able to reproduce the issue by intentionally manipulating the timing (sleeping before the free) to verify that the race condition is technically feasible, and apparently this can happen "in the wild" on MacOS, at least with an M1. It is also worth noting that this is due to (or a regression from) the fix for ITS#9155 (https://github.com/LMDB/lmdb/commit/cb256f409bb53efeda4ac69ee8165a0b4fc1a277) where the free call was moved outside the conditional (for having a parent) that had previously never been executed after the mutex is unlocked, but now is called after the unlock. Anyway, the solution is relatively simple, the free call simply has to be moved above the unlock. In my patch, I also moved the free call for mt_dirty_ovs. I am not sure what OVERFLOW_NOTYET/mt_dirty_ovs is for, but presumably it should be handled the same. This could alternately be solved by saving the reference to these lists before unlocking, and freeing after unlocking, which would slightly decrease the amount of processing within the mutex guarded code. Let me know if you prefer a patch that does that. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10205] New: SSL handshake blocks forever in async mode if server unaccessible
by openldap-its＠openldap.org 23 Sep '25

23 Sep '25

https://bugs.openldap.org/show_bug.cgi?id=10205 Issue ID: 10205 Summary: SSL handshake blocks forever in async mode if server unaccessible Product: OpenLDAP Version: 2.5.17 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: regtube(a)hotmail.com Target Milestone: --- When ldaps:// scheme is used to connect to currently unaccessible server with LDAP_OPT_CONNECT_ASYNC and LDAP_OPT_NETWORK_TIMEOUT options set, it blocks forever on SSL_connect. Here is a trace: ldap_sasl_bind ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP winserv.test.net:636 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 192.168.56.2:636 ldap_pvt_connect: fd: 3 tm: 30 async: -1 ldap_ndelay_on: 3 attempting to connect: connect errno: 115 ldap_int_poll: fd: 3 tm: 0 ldap_err2string [2024-04-25 15:41:27.112] [error] [:1] bind(): Connecting (X) [2024-04-25 15:41:27.112] [error] [:1] err: -18 ldap_sasl_bind ldap_send_initial_request ldap_int_poll: fd: 3 tm: 0 ldap_is_sock_ready: 3 ldap_ndelay_off: 3 TLS trace: SSL_connect:before SSL initialization TLS trace: SSL_connect:SSLv3/TLS write client hello Looks like it happens because non-blocking mode is cleared from the socket (ldap_ndelay_off) after the first poll for write, and non-blocking mode is never restored before attempt to do tls connect, because of the check that assumes that non-blocking mode has already been set for async mode: if ( !async ) { /* if async, this has already been set */ ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_NONBLOCK, (void*)1 ); } while in fact it was cleared. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10092] New: Local logging doesn't build on Windows
by openldap-its＠openldap.org 19 Aug '25

19 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10092 Issue ID: 10092 Summary: Local logging doesn't build on Windows Product: OpenLDAP Version: 2.6.6 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: hyc(a)openldap.org Target Milestone: --- slapd/logging.c uses writev() to write a prefix and the log message together in one call. This feature doesn't exist on Windows. The closest equivalent, WriteFileGather, only works on page sized and aligned writes. On Windows the only way to write as desired is to copy the message into a new buffer first. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10140] New: Add microsecond timestamp format for local file logging
by openldap-its＠openldap.org 19 Aug '25

19 Aug '25

https://bugs.openldap.org/show_bug.cgi?id=10140 Issue ID: 10140 Summary: Add microsecond timestamp format for local file logging Product: OpenLDAP Version: 2.6.6 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: gnoe(a)symas.com Target Milestone: --- Add microsecond-level timestamps to local file logging. Format is: "YYYY-mm-ddTHH:MM:SS.ffffffZ" The attached patch file is derived from OpenLDAP Software. All of the modifications to OpenLDAP Software represented in the following patch(es) were developed by Gregory Noe gnoe(a)symas.com. I have not assigned rights and/or interest in this work to any party. The attached modifications to OpenLDAP Software are subject to the following notice: Copyright 2023 Gregory Noe Redistribution and use in source and binary forms, with or without modification, are permitted only as authorized by the OpenLDAP Public License. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9849] New: Update website to support LTS and Feature releases
by openldap-its＠openldap.org 15 Jul '25

15 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=9849 Issue ID: 9849 Summary: Update website to support LTS and Feature releases Product: website Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: website Assignee: bugs(a)openldap.org Reporter: mnormann(a)symas.com Target Milestone: --- Modify .wlmrc variable names and website content to handle both Feature Release and Long Term Support release. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10357] New: Potential buffer underflow in function config_find_base
by openldap-its＠openldap.org 01 Jul '25

01 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=10357 Issue ID: 10357 Summary: Potential buffer underflow in function config_find_base Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- In function `config_find_base`, we have the code: ```c char *c = dn->bv_val+dn->bv_len; for (;*c != ',';c--); ``` In the loop, if the string doesn't contain any commas, `c` will decrement below `dn->bv_val`, causing buffer underflow when `*c` is accessed. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10354] New: Enhancement: Allow tuning of pwdLastSuccess (like authTimestamp)
by openldap-its＠openldap.org 01 Jul '25

01 Jul '25

https://bugs.openldap.org/show_bug.cgi?id=10354 Issue ID: 10354 Summary: Enhancement: Allow tuning of pwdLastSuccess (like authTimestamp) Product: OpenLDAP Version: 2.5.13 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: u.windl(a)ukr.de Target Milestone: --- As I understand it, the function of the lastbind overlay were integrated to slapd core (under different names). While the overly used attribute authTimestamp, slapd uses attribute pwdLastSuccess to record the time of successful bind. So in principle one could activate both at the same time, but the purpose is unclear... Anyway the lastbind overlay allows to configure (among others) the "lastbind-precision", allowing to skip recording of too many successful binds for a while. Unfortunately the slapd core does not offer a comparable thing, so (for example) automated periodic binds (e.g. used for monitoring) may fill a changelog (delta-syncrepl) over time. The proposal is to implement some mechanism of rate limiting for the updates of pwdLastSuccess, or/and allow filtering of DNs that are included/excepted from this mechanism (so automated periodic system accounts may be excepted). -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 7697] RFE: contrib/slapo-lastbind as an official overlay
by openldap-its＠openldap.org 12 Jun '25

12 Jun '25

https://bugs.openldap.org/show_bug.cgi?id=7697 Ondřej Kuzník <ondra(a)mistotebe.net> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |u.windl(a)ukr.de --- Comment #5 from Ondřej Kuzník <ondra(a)mistotebe.net> --- *** Issue 10354 has been marked as a duplicate of this issue. *** -- You are receiving this mail because: You are on the CC list for the issue.

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openldap-bugs June 2025