CVE-2026-11788

389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser

State: Published
Severity: 5.9 Medium
Published: Jun 9, 2026
Updated: Oct 8, 2026
Reserved: Jun 9, 2026

Description

A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.

Scores

CVSS	Score	Vector	Source
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	redhat

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
Red Hat Directory Server 11.5 E4S for RHEL 8Red Hat	8060020260908152739.0ca98e7e and laterNot affected
Red Hat Directory Server 11.7 E4S for RHEL 8Red Hat	8080020260806114250.f969626e and laterNot affected
Red Hat Directory Server 11.9 for RHEL 8Red Hat	8100020260803140625.37ed7c03 and laterNot affected
Red Hat Directory Server 12.2 E4S for RHEL 9Red Hat	9020020260730155601.1674d574 and laterNot affected
Red Hat Directory Server 12.4 E4S for RHEL 9Red Hat	9040020260810131422.1674d574 and laterNot affected
Red Hat Enterprise Linux 10Red Hat	0:3.2.0-9.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:3.0.6-20.el10_0 and laterNot affected
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat	0:1.3.11.1-14.el7_9 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	8100020260806150504.25e700aa and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	8040020260803141511.96015a92 and laterNot affected
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat	8040020260803141511.96015a92 and laterNot affected
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat	8060020260806120442.824efc52 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat	8060020260806120442.824efc52 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	8080020260806114228.6dbb3803 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	8080020260806114228.6dbb3803 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:2.8.0-9.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat	0:2.2.4-20.el9_2 and laterNot affected
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat	0:2.4.5-27.el9_4 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:2.6.1-23.el9_6 and laterNot affected
Red Hat Directory Server 12Red Hat
Red Hat Directory Server 13Red Hat
Red Hat Enterprise Linux 6Red Hat

References

RHSA-2026:55421vendor-advisory
RHSA-2026:55422vendor-advisory
RHSA-2026:55423vendor-advisory
RHSA-2026:55424vendor-advisory
RHSA-2026:55425vendor-advisory
RHSA-2026:55426vendor-advisory
RHSA-2026:55530vendor-advisory
RHSA-2026:55532vendor-advisory
RHSA-2026:55756vendor-advisory
RHSA-2026:55757vendor-advisory
RHSA-2026:55758vendor-advisory
RHSA-2026:55794vendor-advisory
RHSA-2026:56047vendor-advisory
RHSA-2026:56048vendor-advisory
RHSA-2026:56050vendor-advisory
RHSA-2026:79217vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-11788vdb-entry
RHBZ#2485423issue-tracking

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