Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Directory Server 11 | unaffected |
| Red Hat / Red Hat Directory Server 12 | unaffected |
| Red Hat / Red Hat Directory Server 13 | affected |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 6 | unaffected |
| Red Hat / Red Hat Enterprise Linux 7 | unaffected |
| Red Hat / Red Hat Enterprise Linux 8 | unaffected |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected |
CWE
CWE-415
References
- https://access.redhat.com/security/cve/CVE-2026-18663
- https://bugzilla.redhat.com/show_bug.cgi?id=2510631
ADP enrichment
No English description supplied.
No references supplied.