Fiche vulnérabilité
CVE-2026-11791 : faille moyenne redhat directory server (CVSS 5.0)
Description
A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).
En bref
- Sévérité
- Moyenne (CVSS 5.0)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 18 juin 2026
- Dernière mise à jour
- 30 juin 2026
Produits concernés
- redhat directory server
- redhat 389 directory server
- redhat enterprise linux