CVE-2026-9064
CVE-2026-9064 · 389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
CVSS 7.5 · High · EPSS 0.8%
- Published
- Updated
Stack: system
Affected products and versions
red hat directory server 11.5 e4s for rhel 8
- Versions
- ≥ 8060020260609102432.0ca98e7e: Not affected (rpm)
No fix published
red hat directory server 11.7 e4s for rhel 8
- Versions
- ≥ 8080020260610130252.f969626e: Not affected (rpm)
No fix published
red hat directory server 11.9 for rhel 8
- Versions
- ≥ 8100020260601104139.37ed7c03: Not affected (rpm)
No fix published
red hat directory server 12.2 e4s for rhel 9
- Versions
- ≥ 9020020260615123354.1674d574: Not affected (rpm)
No fix published
red hat directory server 12.4 e4s for rhel 9
- Versions
- ≥ 9040020260611130021.1674d574: Not affected (rpm)
No fix published
red hat enterprise linux 10
- Versions
- ≥ 0:3.2.0-7.el10_2: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
- Versions
- ≥ 0:3.0.6-18.el10_0: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
- Versions
- ≥ 0:1.3.11.1-12.el7_9: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 8100020260601102239.25e700aa: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 8040020260609102422.96015a92: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 8040020260609102422.96015a92: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 8060020260609102416.824efc52: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 8060020260609102416.824efc52: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 8080020260610125847.6dbb3803: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 8080020260610125847.6dbb3803: Not affected (rpm)
No fix published
red hat enterprise linux 9
- Versions
- ≥ 0:2.8.0-7.el9_8: Not affected (rpm)
No fix published
red hat enterprise linux 9.2 update services for sap solutions
- Versions
- ≥ 0:2.2.4-18.el9_2: Not affected (rpm)
No fix published
red hat enterprise linux 9.4 update services for sap solutions
- Versions
- ≥ 0:2.4.5-25.el9_4: Not affected (rpm)
No fix published
red hat enterprise linux 9.6 extended update support
- Versions
- ≥ 0:2.6.1-21.el9_6: Not affected (rpm)
No fix published
red hat directory server 13.2
- Versions
- ≥ 1781714123: Not affected (rpm)
No fix published
red hat directory server 12
No fix published
red hat directory server 13
No fix published
red hat enterprise linux 6
No fix published
389-ds-base Debian:12
- Versions
- 2.3.1+dfsg1-1
- 2.3.1+dfsg1-1+deb12u1
- 2.3.4+dfsg1-1
- 2.3.4+dfsg1-1.1
- 2.4.4+dfsg1-1
- 2.4.4+dfsg1-3
- 2.4.5+dfsg1-1
- 3.0.2+dfsg1-1
- 3.1.1+dfsg1-1
- 3.1.1+dfsg1-2
- 3.1.1+dfsg1-3
- 3.1.2+dfsg1-1
- 3.1.2+vendor1-1
- 3.1.2+vendor1-2
- 3.3.0-1
- 3.3.0-2
- 3.3.1-1
- 3.3.1-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://access.redhat.com/errata/RHSA-2026:26452
- https://access.redhat.com/errata/RHSA-2026:26453
- https://access.redhat.com/errata/RHSA-2026:26454
- https://access.redhat.com/errata/RHSA-2026:26455
- https://access.redhat.com/errata/RHSA-2026:26456
- https://access.redhat.com/errata/RHSA-2026:26457
- https://access.redhat.com/errata/RHSA-2026:26458
- https://access.redhat.com/errata/RHSA-2026:26459
- https://access.redhat.com/errata/RHSA-2026:26460
- https://access.redhat.com/errata/RHSA-2026:26461
- https://access.redhat.com/errata/RHSA-2026:26463
- https://access.redhat.com/errata/RHSA-2026:26464
- https://access.redhat.com/errata/RHSA-2026:26465
- https://access.redhat.com/errata/RHSA-2026:26597
- https://access.redhat.com/errata/RHSA-2026:26599
- https://access.redhat.com/errata/RHSA-2026:26639
- https://access.redhat.com/errata/RHSA-2026:27125
- https://access.redhat.com/security/cve/CVE-2026-9064
- https://bugzilla.redhat.com/show_bug.cgi?id=2480093
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9064.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-9064