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).
Metrics
Affected Vendors & Products
References
History
Thu, 18 Jun 2026 17:30:00 +0000
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| Metrics |
ssvc
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Thu, 18 Jun 2026 16:45:00 +0000
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| 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). | |
| Title | 389-ds-base: 389-ds-base: use-after-free in schema reload via attr_syntax_swap_ht() | |
| First Time appeared |
Redhat
Redhat directory Server Redhat enterprise Linux |
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| Weaknesses | CWE-416 | |
| CPEs | cpe:/a:redhat:directory_server:11 cpe:/a:redhat:directory_server:12 cpe:/a:redhat:directory_server:13 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat directory Server Redhat enterprise Linux |
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| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-06-18T15:24:19.371Z
Reserved: 2026-06-09T13:01:16.818Z
Link: CVE-2026-11791
Updated: 2026-06-18T15:24:15.461Z
No data.
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OpenCVE Enrichment
Updated: 2026-06-18T18:00:11Z