CVE-2026-11884

Description

A heap buffer overflow flaw was found in 389 Directory Server. When serializing objectclass definitions, the oc_superior (SUP) field length is omitted from buffer size calculations in read_schema_dse() and schema_oc_to_string(), but the field is still written via strcat(). An attacker with Directory Manager privileges, or a compromised replication supplier, can trigger a server crash by creating objectclasses with long SUP values. This is an incomplete fix variant of CVE-2025-14905.

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Produits concernés

• Red Hat Directory Server 11
• Red Hat Directory Server 12
• Red Hat Directory Server 13
• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9

Scores CVSS

Faiblesses (CWE)

• CWE-122

Références

• https://access.redhat.com/security/cve/CVE-2026-11884
• https://bugzilla.redhat.com/show_bug.cgi?id=2423624
• https://bugzilla.redhat.com/show_bug.cgi?id=2484913

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories