Bug 2485423 (CVE-2026-11788) - CVE-2026-11788 389-ds-base: 389-ds-base: NULL pointer dereference in deref control plugin BER parser
Summary: CVE-2026-11788 389-ds-base: 389-ds-base: NULL pointer dereference in deref co...
Keywords:
Status: NEW
Alias: CVE-2026-11788
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2495003
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-05 12:25 UTC by OSIDB Bzimport
Modified: 2026-08-26 10:53 UTC (History)
11 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-2026:55421 0 None None None 2026-08-17 01:20:43 UTC
Red Hat Product Errata RHSA-2026:55422 0 None None None 2026-08-17 01:33:32 UTC
Red Hat Product Errata RHSA-2026:55423 0 None None None 2026-08-17 02:23:47 UTC
Red Hat Product Errata RHSA-2026:55424 0 None None None 2026-08-17 02:05:45 UTC
Red Hat Product Errata RHSA-2026:55425 0 None None None 2026-08-17 01:23:05 UTC
Red Hat Product Errata RHSA-2026:55426 0 None None None 2026-08-17 01:37:46 UTC
Red Hat Product Errata RHSA-2026:55530 0 None None None 2026-08-17 09:16:14 UTC
Red Hat Product Errata RHSA-2026:55532 0 None None None 2026-08-17 08:51:51 UTC
Red Hat Product Errata RHSA-2026:55756 0 None None None 2026-08-17 15:44:49 UTC
Red Hat Product Errata RHSA-2026:55757 0 None None None 2026-08-17 15:39:28 UTC
Red Hat Product Errata RHSA-2026:55758 0 None None None 2026-08-17 15:54:16 UTC
Red Hat Product Errata RHSA-2026:55794 0 None None None 2026-08-17 17:16:58 UTC
Red Hat Product Errata RHSA-2026:56047 0 None None None 2026-08-18 09:40:24 UTC
Red Hat Product Errata RHSA-2026:56048 0 None None None 2026-08-18 09:40:29 UTC
Red Hat Product Errata RHSA-2026:56050 0 None None None 2026-08-18 09:41:03 UTC

Description OSIDB Bzimport 2026-06-05 12:25:05 UTC 
The dereference control plugin in 389 Directory Server fails to check the return value of ber_init() for NULL before use in deref_parse_ctrl_value() (deref.c). When memory allocation fails under memory pressure, an unauthenticated LDAP client sending a search with the deref control can crash ns-slapd.

The deref plugin is enabled by default. Crash confirmed via GDB fault injection on Fedora 42 (SIGABRT) and CentOS 7 (SIGSEGV on OpenLDAP 2.4). Vulnerable code present since deref plugin introduction in 389-ds-base 1.2.6 (~2010).
Comment 1 errata-xmlrpc 2026-08-17 01:20:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:55421 https://access.redhat.com/errata/RHSA-2026:55421
Comment 2 errata-xmlrpc 2026-08-17 01:23:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:55425 https://access.redhat.com/errata/RHSA-2026:55425
Comment 3 errata-xmlrpc 2026-08-17 01:33:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:55422 https://access.redhat.com/errata/RHSA-2026:55422
Comment 4 errata-xmlrpc 2026-08-17 01:37:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:55426 https://access.redhat.com/errata/RHSA-2026:55426
Comment 5 errata-xmlrpc 2026-08-17 02:05:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:55424 https://access.redhat.com/errata/RHSA-2026:55424
Comment 6 errata-xmlrpc 2026-08-17 02:23:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:55423 https://access.redhat.com/errata/RHSA-2026:55423
Comment 7 errata-xmlrpc 2026-08-17 08:51:49 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 11.9 for RHEL 8

Via RHSA-2026:55532 https://access.redhat.com/errata/RHSA-2026:55532
Comment 8 errata-xmlrpc 2026-08-17 09:16:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:55530 https://access.redhat.com/errata/RHSA-2026:55530
Comment 10 errata-xmlrpc 2026-08-17 15:39:26 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-2026:55757 https://access.redhat.com/errata/RHSA-2026:55757
Comment 11 errata-xmlrpc 2026-08-17 15:44:47 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-2026:55756 https://access.redhat.com/errata/RHSA-2026:55756
Comment 12 errata-xmlrpc 2026-08-17 15:54:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:55758 https://access.redhat.com/errata/RHSA-2026:55758
Comment 13 errata-xmlrpc 2026-08-17 17:16:57 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-2026:55794 https://access.redhat.com/errata/RHSA-2026:55794
Comment 14 errata-xmlrpc 2026-08-18 09:40:23 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 11.7 E4S for RHEL 8

Via RHSA-2026:56047 https://access.redhat.com/errata/RHSA-2026:56047
Comment 15 errata-xmlrpc 2026-08-18 09:40:28 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 12.2 E4S for RHEL 9

Via RHSA-2026:56048 https://access.redhat.com/errata/RHSA-2026:56048
Comment 16 errata-xmlrpc 2026-08-18 09:41:01 UTC 
This issue has been addressed in the following products:

  Red Hat Directory Server 12.4 E4S for RHEL 9

Via RHSA-2026:56050 https://access.redhat.com/errata/RHSA-2026:56050
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