Bug 2484414 (CVE-2026-11610) - CVE-2026-11610 389-ds-base: 389-ds-base: Heap buffer overflow in sasl_io_recv() via padded SASL UNBIND
Summary: CVE-2026-11610 389-ds-base: 389-ds-base: Heap buffer overflow in sasl_io_recv...
Keywords:
Status: NEW
Alias: CVE-2026-11610
Deadline: 2026-07-07
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2497652
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-03 15:59 UTC by OSIDB Bzimport
Modified: 2026-07-08 12:11 UTC (History)
12 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:36195 0 None None None 2026-07-07 12:40:36 UTC
Red Hat Product Errata RHSA-2026:36196 0 None None None 2026-07-07 12:46:25 UTC
Red Hat Product Errata RHSA-2026:36197 0 None None None 2026-07-07 12:20:43 UTC
Red Hat Product Errata RHSA-2026:36198 0 None None None 2026-07-07 12:23:13 UTC
Red Hat Product Errata RHSA-2026:36200 0 None None None 2026-07-07 11:57:37 UTC
Red Hat Product Errata RHSA-2026:36201 0 None None None 2026-07-07 13:25:36 UTC
Red Hat Product Errata RHSA-2026:36202 0 None None None 2026-07-07 13:21:49 UTC
Red Hat Product Errata RHSA-2026:36204 0 None None None 2026-07-07 12:27:11 UTC
Red Hat Product Errata RHSA-2026:36205 0 None None None 2026-07-07 13:01:58 UTC
Red Hat Product Errata RHSA-2026:36206 0 None None None 2026-07-07 13:01:52 UTC
Red Hat Product Errata RHSA-2026:36208 0 None None None 2026-07-07 12:30:21 UTC
Red Hat Product Errata RHSA-2026:36209 0 None None None 2026-07-07 12:30:29 UTC
Red Hat Product Errata RHSA-2026:36585 0 None None None 2026-07-08 06:26:58 UTC
Red Hat Product Errata RHSA-2026:36641 0 None None None 2026-07-08 09:24:20 UTC
Red Hat Product Errata RHSA-2026:36670 0 None None None 2026-07-08 11:28:32 UTC
Red Hat Product Errata RHSA-2026:36671 0 None None None 2026-07-08 12:11:18 UTC

Description OSIDB Bzimport 2026-06-03 15:59:33 UTC 
Finding 008 — 389-ds-base SASL heap overflow in sasl_io_recv().

Vulnerable: ldap/servers/slapd/sasl_io.c (~line 456), SASL_IO_BUFFER_NOT_ENCRYPTED path.
Introduced by commit b4cdebbe (~2013). Missing bounds check on memcpy into 512-byte c_buffer.

Trigger: SASL bind (GSSAPI/DIGEST-MD5), then send padded raw LDAP UNBIND.
DoS confirmed on production binary (389-ds-base-3.1.4-6.fc42).

Fix: add bounds check before memcpy, same pattern as encrypted return path in sasl_io_recv().
Comment 1 errata-xmlrpc 2026-07-07 11:57:36 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 11.9 for RHEL 8

Via RHSA-2026:36200 https://access.redhat.com/errata/RHSA-2026:36200
Comment 2 errata-xmlrpc 2026-07-07 12:20:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:36197 https://access.redhat.com/errata/RHSA-2026:36197
Comment 3 errata-xmlrpc 2026-07-07 12:23:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:36198 https://access.redhat.com/errata/RHSA-2026:36198
Comment 4 errata-xmlrpc 2026-07-07 12:27:10 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 11.5 E4S for RHEL 8

Via RHSA-2026:36204 https://access.redhat.com/errata/RHSA-2026:36204
Comment 5 errata-xmlrpc 2026-07-07 12:30:20 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 11.7 E4S for RHEL 8

Via RHSA-2026:36208 https://access.redhat.com/errata/RHSA-2026:36208
Comment 6 errata-xmlrpc 2026-07-07 12:30:28 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 12.4 E4S for RHEL 9

Via RHSA-2026:36209 https://access.redhat.com/errata/RHSA-2026:36209
Comment 7 errata-xmlrpc 2026-07-07 12:40:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:36195 https://access.redhat.com/errata/RHSA-2026:36195
Comment 8 errata-xmlrpc 2026-07-07 12:46:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:36196 https://access.redhat.com/errata/RHSA-2026:36196
Comment 9 errata-xmlrpc 2026-07-07 13:01:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:36206 https://access.redhat.com/errata/RHSA-2026:36206
Comment 10 errata-xmlrpc 2026-07-07 13:01:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:36205 https://access.redhat.com/errata/RHSA-2026:36205
Comment 11 errata-xmlrpc 2026-07-07 13:21:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:36202 https://access.redhat.com/errata/RHSA-2026:36202
Comment 12 errata-xmlrpc 2026-07-07 13:25:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:36201 https://access.redhat.com/errata/RHSA-2026:36201
Comment 13 errata-xmlrpc 2026-07-08 06:26:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:36585 https://access.redhat.com/errata/RHSA-2026:36585
Comment 14 errata-xmlrpc 2026-07-08 09:24:19 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 12.2 E4S for RHEL 9

Via RHSA-2026:36641 https://access.redhat.com/errata/RHSA-2026:36641
Comment 15 errata-xmlrpc 2026-07-08 11:28:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:36670 https://access.redhat.com/errata/RHSA-2026:36670
Comment 16 errata-xmlrpc 2026-07-08 12:11:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:36671 https://access.redhat.com/errata/RHSA-2026:36671
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