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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. Two heap buffer overflow vulnerabilities exist in 389 Directory Server schema serialization code. Both are incomplete-fix variants of CVE-2025-14905: 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(). Variant 1 (read_schema_dse, schema.c:1765): triggered during schema DSE reads; overflow at SUP >= ~248 bytes. Variant 2 (schema_oc_to_string, schema.c:5151): triggered during schema replication comparison; overflow at SUP >= ~62 bytes. An attacker with Directory Manager privileges can crash the server. In replication topologies, a compromised supplier can push malicious schema to consumers. RCE is not feasible on x86_64 due to ASCII-only overflow content. Parent CVE: CVE-2025-14905 (fixed schema_attr_enum_callback only). Advisory: 389-ds-campaign-2026-04/001-002-Schema-Heap-Overflow/advisory.md. Source: PSIRTSUPT-7600 (Ian Murphy, Red Hat Product Security).
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle. Changing version to 45.
Fixed in https://github.com/389ds/389-ds-base/commit/986ff15bb
FEDORA-2026-b16c9cbc0f (389-ds-base-3.2.3-2.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-b16c9cbc0f
FEDORA-2026-c1e25a4642 has been pushed to the Fedora 45 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c1e25a4642` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c1e25a4642 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-b16c9cbc0f has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-b16c9cbc0f` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b16c9cbc0f See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-0b8bc362b1 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-0b8bc362b1` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-0b8bc362b1 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.