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[Issue 10162] New: Fix for binary attributes data corruption in back-sql
by openldap-its＠openldap.org 20 May '26

20 May '26

https://bugs.openldap.org/show_bug.cgi?id=10162 Issue ID: 10162 Summary: Fix for binary attributes data corruption in back-sql Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Keywords: needs_review Severity: normal Priority: --- Component: backends Assignee: bugs(a)openldap.org Reporter: dex.tracers(a)gmail.com Target Milestone: --- Created attachment 1006 --> https://bugs.openldap.org/attachment.cgi?id=1006&action=edit Fix for binary attributes corruption on backed-sql I've configured slapd to use back-sql (mariadb through odbc) and observed issues with the BINARY data retrievals from the database. The length of the attributes was properly reported, but the correct data inside was always 16384 bytes and after that point - some junk (usually filled-up with AAAAAAAA and some other attributes data from memory). During the debugging - I've noticed that: - The MAX_ATTR_LEN (16384 bytes) is used to set the length of the data for BINARY columns when SQLBindCol is done inside of the "backsql_BindRowAsStrings_x" function - After SQLFetch is done - data in row->cols[i] is fetched up to the specified MAX_ATTR_LEN - After SQLFetch is done - the correct data size (greater than MAX_ATTR_LEN) is represented inside of the row->value_len I'm assuming that slapd allocates the pointer in memory (row->cols[i]), fills it with the specified amount of data (MAX_ATTR_LEN), but when forming the actual attribute data - uses the length from row->value_len and so everything from 16384 bytes position till row->value_len is just a junk from the memory (uninitialized, leftovers, data from other variables). After an investigation, I've find-out that: - for BINARY or variable length fields - SQLGetData should be used - SQLGetData supports chunked mode (if length is unknown) or full-read mode if the length is known - it could be used in pair with SQLBindCol after SQLFetch (!) Since we have the correct data length inside of row->value_len, I've just added the code to the backsql_get_attr_vals() function to overwrite the corrupted data with the correct data by issuing SQLGetData request. And it worked - binary data was properly retrieved and reported over LDAP! My current concerns / help needed - I'm not very familiar with the memory allocation/deallocation mechanisms, so I'm afraid that mentioned change can lead to memory corruption (so far not observed). Please review attached patch (testing was done on OPENLDAP_REL_ENG_2_5_13, and applied on the master branch for easier review/application). -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 10503] saslauthz LDAP_X_SCOPE_GROUP fails to escape proxyAuthz asserted DN in internal group filter, enabling wildcard substring-filter group-membership bypass
by openldap-its＠openldap.org 19 May '26

19 May '26

https://bugs.openldap.org/show_bug.cgi?id=10503 Quanah Gibson-Mount <quanah(a)openldap.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |TEST Status|IN_PROGRESS |RESOLVED --- Comment #6 from Quanah Gibson-Mount <quanah(a)openldap.org> --- head: • 9b55792b by Howard Chu at 2026-05-19T16:39:09+00:00 ITS#10503 authzTo: reject member attributes with non-DN syntax RE27: • 0c8a5875 by Howard Chu at 2026-05-19T22:36:36+00:00 ITS#10503 authzTo: reject member attributes with non-DN syntax RE26: • 41d7478a by Howard Chu at 2026-05-19T23:00:51+00:00 ITS#10503 authzTo: reject member attributes with non-DN syntax -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9009] 2.7: Switch to LMDB v1.0
by openldap-its＠openldap.org 19 May '26

19 May '26

https://bugs.openldap.org/show_bug.cgi?id=9009 --- Comment #1 from Quanah Gibson-Mount <quanah(a)openldap.org> --- head: • 6e7690e8 by Howard Chu at 2026-05-19T17:06:20+01:00 ITS#9009 slapd-mdb: fix Makefile for LMDB 1.0 RE27: • 12656a7c by Howard Chu at 2026-05-19T22:36:27+00:00 ITS#9009 slapd-mdb: fix Makefile for LMDB 1.0 -- You are receiving this mail because: You are on the CC list for the issue.

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19 May '26

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[Issue 8605] spelling
by openldap-its＠openldap.org 15 May '26

15 May '26

https://bugs.openldap.org/show_bug.cgi?id=8605 --- Comment #9 from Quanah Gibson-Mount <quanah(a)openldap.org> --- mdb.master: 2216dbd9ee8d5c7a4b4d22e59e5831ed9cae32af mdb.master3: 93c460b8e4607558a9faf8f53d65468c25d73a12 mdb/RE1.0: f3ef35bbfbaaab8984b1a4eeb553643fb507862f mdb/RE0.9: 8aa8c1976f2d8e7db2240445700053d2a3a53c88 -- You are receiving this mail because: You are on the CC list for the issue.

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14 May '26

https://bugs.openldap.org/show_bug.cgi?id=10503 Quanah Gibson-Mount <quanah(a)openldap.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Group|OpenLDAP-devs | -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 8461] Unable to import LDIF from back-hdb DB to back-mdb db
by openldap-its＠openldap.org 13 May '26

13 May '26

https://bugs.openldap.org/show_bug.cgi?id=8461 Quanah Gibson-Mount <quanah(a)openldap.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #7 from Quanah Gibson-Mount <quanah(a)openldap.org> --- Fixed by switch to lmdb 1.0 -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 9009] 2.7: Switch to LMDB v1.0
by openldap-its＠openldap.org 13 May '26

13 May '26

https://bugs.openldap.org/show_bug.cgi?id=9009 Quanah Gibson-Mount <quanah(a)openldap.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|UNCONFIRMED |RESOLVED -- You are receiving this mail because: You are on the CC list for the issue.

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[Issue 8461] Unable to import LDIF from back-hdb DB to back-mdb db
by openldap-its＠openldap.org 13 May '26

13 May '26

https://bugs.openldap.org/show_bug.cgi?id=8461 Issue 8461 depends on issue 9009, which changed state. Issue 9009 Summary: 2.7: Switch to LMDB v1.0 https://bugs.openldap.org/show_bug.cgi?id=9009 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED -- You are receiving this mail because: You are on the CC list for the issue.

1 0

[Issue 6825] unique_uri filter reaching beyond its intended target
by openldap-its＠openldap.org 06 May '26

06 May '26

https://bugs.openldap.org/show_bug.cgi?id=6825 Quanah Gibson-Mount <quanah(a)openldap.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Assignee|bugs(a)openldap.org |ondra(a)mistotebe.net Target Milestone|2.7.1 |2.7.0 Resolution|--- |TEST --- Comment #9 from Quanah Gibson-Mount <quanah(a)openldap.org> --- head: • 985d420d by Ondřej Kuzník at 2026-04-30T19:50:52+00:00 ITS#6825 slapd: add modify_entry helper • 9d7d8e52 by Ondřej Kuzník at 2026-04-30T19:50:52+00:00 ITS#6825 slapo-unique: use modify_entry • a7dd52a9 by Ondřej Kuzník at 2026-04-30T19:50:52+00:00 ITS#6825 slapo-unique: adjust test • 85c8e671 by Ondřej Kuzník at 2026-04-30T19:50:52+00:00 ITS#6825 slapo-constraint: also use modify_entry • f3a7fa1a by Ondřej Kuzník at 2026-04-30T19:50:52+00:00 ITS#6825 back-ldif: also use modify_entry -- You are receiving this mail because: You are on the CC list for the issue.

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