openldap-bugs June 2025

openldap-bugs@openldap.org

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[Issue 10359] New: delta-MPR uses logbase for more than it documents
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10359 Issue ID: 10359 Summary: delta-MPR uses logbase for more than it documents Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: ondra(a)mistotebe.net Target Milestone: --- syncrepl logbase=<dn> is used not just for a syncrepl session (documented) but also for internal searches when it comes to delta-MPR conflict resolution. This is not documented so an admin doesn't know that the local accesslog DB needs to exist and have the same suffix. Either the documentation needs updating or a new configuration item needs to be added to allow an accesslog DB with a different suffix locally. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10304] New: Unable to remove item from directory as part of transaction if it is the last item in that directory
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10304 Issue ID: 10304 Summary: Unable to remove item from directory as part of transaction if it is the last item in that directory Product: OpenLDAP Version: 2.5.13 Hardware: All OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: sophie.elliott(a)arcticlake.com Target Milestone: --- I am running my ldap server on Debian 11.3, with the mdb backend, using the backported openldap version 2.5.13. I am not 100% certain if this is an issue with OpenLDAP or liblmdb, but I have been running tests in the repo and it looks like the liblmdb tests work fine, so I think it's with OpenLDAP itself. I have been performing a transaction, and deleting entries from a directory during this transaction. This works fine if the item that I am deleting isn't the last entry in its directory, but when it is I get a MDB_NOTFOUND error on the commit transaction call and the delete doesn't go through. Here is an excerpt of the logs when this happens: ``` 67a64334.14e1fc32 0x766ad2a00700 => index_entry_del( 108, "accessGroupID=f23de82f-3a1c-4f88-86bb-bb07f9a0992d,o=[COMPANY],ou=accessGroups,dc=local,dc=[COMPANY],dc=com" ) 67a64334.14e21912 0x766ad2a00700 mdb_idl_delete_keys: 6c [62d34624] 67a64334.14e22812 0x766ad2a00700 <= index_entry_del( 108, "accessGroupID=f23de82f-3a1c-4f88-86bb-bb07f9a0992d,o=[COMPANY],ou=accessGroups,dc=local,dc=[COMPANY],dc=com" ) success 67a64334.14e23a91 0x766ad2a00700 mdb_delete: txn_commit failed: MDB_NOTFOUND: No matching key/data pair found (-30798) ``` Please let me know if I should submit this issue elsewhere, or if this is something that has already been fixed in a more recent version. I'm also happy to provide more details if necessary. Thank you! -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10343] New: Potential Memory Leak in function slap_uuidstr_from_normalized
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10343 Issue ID: 10343 Summary: Potential Memory Leak in function slap_uuidstr_from_normalized 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: --- Created attachment 1070 --> https://bugs.openldap.org/attachment.cgi?id=1070&action=edit Patch: Change 1 to -1. In function slap_uuidstr_from_normalized, the code allocates a new `struct berval` with ```c new = (struct berval *)slap_sl_malloc(sizeof(struct berval), ctx); ``` and then attempt to allocate `new->bv_val`. If that second allocation fails, it sets `rc = 1` and jumps to the `done` cleanup label. However, the cleanup code only runs when `rc == -1`, so the memory pointed by `new` is never freed, causing a memory leak. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10347] New: Fix a memory leak in function comp_convert_asn_to_ldap
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10347 Issue ID: 10347 Summary: Fix a memory leak in function comp_convert_asn_to_ldap Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: contrib Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- Created attachment 1076 --> https://bugs.openldap.org/attachment.cgi?id=1076&action=edit Patch: Fix a memory leak in function comp_convert_asn_to_ldap In function comp_convert_asn_to_ldap, the bv->bv_val is allocated in 3 places: case BASICTYPE_BOOLEAN: bv->bv_val = (char*)malloc( 5 ); case BASICTYPE_INTEGER: bv->bv_val = (char*)malloc( INITIAL_ATTR_SIZE ); case BASICTYPE_ENUMERATED: bv->bv_val = (char*)malloc( INITIAL_ATTR_SIZE ); When csi->csi_syntax != NULL and csi->csi_syntax->ssyn_pretty != NULL, bv->bv_val is overwriten with bv->bv_val = prettied.bv_val;, causing porential memory leak. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10348] New: Free ch_malloc-allocated memory in error paths
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10348 Issue ID: 10348 Summary: Free ch_malloc-allocated memory in error paths 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: --- Created attachment 1077 --> https://bugs.openldap.org/attachment.cgi?id=1077&action=edit Patch: Relase memory allocated from ch_malloc in 2 error handling branches. In ldap_back_monitor_ops_init and syncrepl_dirsync_message, memory allocated with ch_malloc was not freed when errors occurred. This adds two ch_free calls to ensure proper cleanup in those branches. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10342] New: Potential Memory Leak in function mdb_txn_begin
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10342 Issue ID: 10342 Summary: Potential Memory Leak in function mdb_txn_begin Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- Created attachment 1069 --> https://bugs.openldap.org/attachment.cgi?id=1069&action=edit Free txn->mt_u.dirty_list before freeing txn The function `mdb_txn_begin` allocates the dirty list via ```c txn->mt_u.dirty_list = malloc(sizeof(MDB_ID2) * MDB_IDL_UM_SIZE); ``` Later, when `txn != env->me_txn0`, it calls ```c free(txn); ``` without first freeing `txn->mt_u.dirty_list`. This orphaned allocation leads to a memory leak. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10355] New: mplay doesn't compile on musl
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10355 Issue ID: 10355 Summary: mplay doesn't compile on musl Product: LMDB Version: 0.9.33 Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: tools Assignee: bugs(a)openldap.org Reporter: bgilbert(a)backtick.net Target Milestone: --- With the musl C library (e.g. Alpine Linux) mplay doesn't compile: gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized -c mplay.c mplay.c: In function 'addpid': mplay.c:490:23: error: assignment of read-only variable 'stdin' 490 | stdin = fdopen(0, "r"); | ^ mplay.c:491:24: error: assignment of read-only variable 'stdout' 491 | stdout = fdopen(1, "w"); | ^ make: *** [Makefile:99: mplay.o] Error 1 -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10341] New: Two potential buffer overruns in function mdb_cmp_cint.
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10341 Issue ID: 10341 Summary: Two potential buffer overruns in function mdb_cmp_cint. Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- Created attachment 1068 --> https://bugs.openldap.org/attachment.cgi?id=1068&action=edit Patch: Fix buffer overrun in function mdb_cmp_cint We found two potential bugs in `mdb_cmp_cint`’s backward‐scan loop: ```c u = (unsigned short *)((char *)a->mv_data + a->mv_size); c = (unsigned short *)((char *)b->mv_data + a->mv_size); do { x = *--u - *--c; } while (!x && u > (unsigned short *)a->mv_data); ``` 1. **Underflow when `a->mv_size == 0`** If `a->mv_size` is zero, `u` is initialized to point one past the end of the zero‐length buffer. The first `--u` then moves it before `a->mv_data`, and the subsequent dereference is undefined. The original API allows lengths from 0 to `0xFFFFFFFF`, so a zero length is possible can could lead to pointer underflow here. 2. **Overflow of `b->mv_data` when `b->mv_size < a->mv_size`** The code uses `a->mv_size` to advance both `u` and `c`, and only bounds‐checks `u`. If `b->mv_size` is smaller than `a->mv_size`, `c` may run past the end of its buffer before the loop terminates, causing a buffer overrun. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10340] New: Potential Buffer Overflow in mdb_rebalance
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10340 Issue ID: 10340 Summary: Potential Buffer Overflow in mdb_rebalance Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: libraries Assignee: bugs(a)openldap.org Reporter: alexguo1023(a)gmail.com Target Milestone: --- Created attachment 1067 --> https://bugs.openldap.org/attachment.cgi?id=1067&action=edit Add an early return when `mc->mc_top == 0` In `mdb_rebalance`, we do: ```c int ptop = mc->mc_top - 1; node = mc->mc_pg[ptop]; ``` However, `mc->mc_top` defaults to 0 in many contexts, so `ptop` can become `-1`. Indexing `mc->mc_pg[-1]` causes invalid memory access. Elsewhere this is handled by checking `mc->mc_top > 0` before decrementing. To fix this, we add an early return when `mc->mc_top == 0`. A root page (or one without a parent) doesn’t need rebalancing, so this guard prevents `ptop` from ever being negative and eliminates the out-of-bounds access. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10132] New: manage syncrepl as a cn=config entry
by openldap-its＠openldap.org 27 Jan '26

27 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10132 Issue ID: 10132 Summary: manage syncrepl as a cn=config entry Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: ondra(a)mistotebe.net Target Milestone: --- Maybe it being exposed through both places (olcSyncrepl and the entry) could be a way to manage the transition (unless we have a way to handle cn=config schema upgrades internally). Uncertain as to how that affects cn=config replication. -- You are receiving this mail because: You are on the CC list for the issue.

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openldap-bugs June 2025