CVEvulnerability
CVE-2026-18663
5.9 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-08-12
- Last modified
- 2026-08-14
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-415
Description
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function frees the parsed controls array on the Session Tracking critical-control rejection path without clearing the SLAPI_REQCONTROLS pblock slot. Operation teardown then frees the same pointer again, causing a double-free. An unauthenticated remote attacker can trigger this with a single BIND request carrying a critical Session Tracking control, resulting in heap corruption and potential denial of service.
Related
Weakness · CWE (1)
- CWE-415 Double Free weakness
References
- https://access.redhat.com/security/cve/CVE-2026-18663 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2510631 bugzilla.redhat.com