openldap-bugs August 2025

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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 10381] New: Logformat config is broken
by openldap-its＠openldap.org 29 Jan '26

29 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=10381 Issue ID: 10381 Summary: Logformat config is broken Product: OpenLDAP Version: 2.6.10 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: --- After ITS#10140, logformat config parsing and emitting is broken. Some formats don't emit in cn=config, some abort. On Windows, log prefix is corrupted. Patch is being tested. -- 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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[Issue 9884] New: Document "set" patterns in ACLs
by openldap-its＠openldap.org 06 Jan '26

06 Jan '26

https://bugs.openldap.org/show_bug.cgi?id=9884 Issue ID: 9884 Summary: Document "set" patterns in ACLs Product: OpenLDAP Version: unspecified 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: --- The slapd.access(5) man page has this exceptionally unhelpful line where sets are concerned: "The statement set=<pattern> is undocumented yet." Even if it is an experimental feature, it should still be documented on how it is meant to operate. -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9936] New: slapd attempting free on address which was not malloced
by openldap-its＠openldap.org 12 Dec '25

12 Dec '25

https://bugs.openldap.org/show_bug.cgi?id=9936 Issue ID: 9936 Summary: slapd attempting free on address which was not malloced Product: OpenLDAP Version: 2.6.3 Hardware: x86_64 OS: Linux Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: slapd Assignee: bugs(a)openldap.org Reporter: kimjuhi96(a)snu.ac.kr Target Milestone: --- I get invalid free running this on the latest openldap from git, built with CFLAGS="-fsanitize=address" using clang 15. Seems this is similar to https://bugs.openldap.org/show_bug.cgi?id=9912. ./servers/slapd/slapd -T c -s1 -s1 Stopped reason: SIGABRT __GI_raise (sig=sig@entry=0x6) at ../sysdeps/unix/sysv/linux/raise.c:50 50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory. gdb-peda$ bt #0 __GI_raise (sig=sig@entry=0x6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 0x00007ffff78ca859 in __GI_abort () at abort.c:79 #2 0x00005555556eb04f in __sanitizer::Abort () at /home/juhee/project/foxfuzz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp:143 #3 0x00005555556e8aac in __sanitizer::Die () at /home/juhee/project/foxfuzz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:58 #4 0x00005555556c5dda in __asan::ScopedInErrorReport::~ScopedInErrorReport (this=0x7fffffffbe7e, __in_chrg=<optimized out>) at /home/juhee/project/foxfuzz/llvm-project/compiler-rt/lib/asan/asan_report.cpp:192 #5 0x00005555556c72b8 in __asan::ReportFreeNotMalloced (addr=<optimized out>, free_stack=0x7fffffffca90) at /home/juhee/project/foxfuzz/llvm-project/compiler-rt/lib/asan/asan_report.cpp:199 #6 0x00005555556c02ab in __interceptor_free (ptr=0x7fffffffe359) at /home/juhee/project/foxfuzz/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:53 #7 0x0000555555d3efe2 in ber_memfree_x () #8 0x0000555555847d33 in ch_free () #9 0x0000555555a31178 in slap_tool_init () #10 0x0000555555a2e54d in slapcat () #11 0x000055555570901f in main () #12 0x00007ffff78cc083 in __libc_start_main (main=0x555555706ef0 <main>, argc=0x5, argv=0x7fffffffdfc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdfb8) at ../csu/libc-start.c:308 #13 0x000055555561011e in _start () at /home/juhee/project/foxfuzz/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h:397 gdb-peda$ -- You are receiving this mail because: You are on the CC list for the issue.

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openldap-bugs August 2025