RHSA-2026:55422: Important: 389-ds-base security update

Published Aug 17, 2026
·
Updated

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.Security Fix(es): 389-ds-base: 389-ds-base: pre-auth LDAP filter injection in CleanAllRUV status check (CVE-2026-11770) 389-ds-base: 389-ds-base: NULL pointer dereference in deref control plugin BER parser (CVE-2026-11788) 389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in getruvelementfromberval() via unbounded replica ID parsing (CVE-2026-15722) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected Software

34 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server - AUS
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
redhat/389-ds-base<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-debugsource<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-libs<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-libs-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-snmp-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/python3-lib389<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-debugsource<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-libs<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-libs-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-snmp-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base<2.4.5-27.el9_4.aa
2.4.5-27.el9_4.aa
redhat/389-ds-base-debuginfo<2.4.5-27.el9_4.aa
2.4.5-27.el9_4.aa
redhat/389-ds-base-debugsource<2.4.5-27.el9_4.aa
2.4.5-27.el9_4.aa
redhat/389-ds-base-libs<2.4.5-27.el9_4.aa
2.4.5-27.el9_4.aa
redhat/389-ds-base-libs-debuginfo<2.4.5-27.el9_4.aa
2.4.5-27.el9_4.aa
redhat/389-ds-base-snmp-debuginfo<2.4.5-27.el9_4.aa
2.4.5-27.el9_4.aa
redhat/389-ds-base-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-debugsource<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-libs<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-libs-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4
redhat/389-ds-base-snmp-debuginfo<2.4.5-27.el9_4
2.4.5-27.el9_4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/389-ds-base to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  2. Upgrade

    Upgrade redhat/389-ds-base-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  3. Upgrade

    Upgrade redhat/389-ds-base-debugsource to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  4. Upgrade

    Upgrade redhat/389-ds-base-libs to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  5. Upgrade

    Upgrade redhat/389-ds-base-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  6. Upgrade

    Upgrade redhat/389-ds-base-snmp-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  7. Upgrade

    Upgrade redhat/python3-lib389 to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4
  8. Upgrade

    Upgrade redhat/389-ds-base to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4.aa
  9. Upgrade

    Upgrade redhat/389-ds-base-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4.aa
  10. Upgrade

    Upgrade redhat/389-ds-base-debugsource to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4.aa
  11. Upgrade

    Upgrade redhat/389-ds-base-libs to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4.aa
  12. Upgrade

    Upgrade redhat/389-ds-base-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4.aa
  13. Upgrade

    Upgrade redhat/389-ds-base-snmp-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.4.5-27.el9_4.aa
  14. Upgrade

    Upgrade 389-ds-base to a version that resolves this vulnerability.

    Patch CVE-2026-11788
  15. Upgrade

    Upgrade 389-ds-base to a version that resolves this vulnerability.

    Patch CVE-2026-15722
  16. Upgrade

    Upgrade 389-ds-base to a version that resolves this vulnerability.

    Patch CVE-2026-11770

Event History

Aug 17, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·12:04 AM
Data Sourced
via Red Hat·12:04 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:55422?

The severity of RHSA-2026:55422 is classified as high with a score of 7.

2

How do I fix RHSA-2026:55422?

To fix RHSA-2026:55422, apply the latest security updates for the 389-ds-base packages from Red Hat.

3

What type of vulnerability is associated with RHSA-2026:55422?

RHSA-2026:55422 involves a pre-auth LDAP filter injection vulnerability in the 389 Directory Server.

4

What software is impacted by RHSA-2026:55422?

RHSA-2026:55422 impacts various Red Hat 389-ds-base packages along with their debug and library versions.

5

What should I do if I encounter issues after updating for RHSA-2026:55422?

If you encounter issues after the update for RHSA-2026:55422, consult the Red Hat support channels for assistance.

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