DEBIAN-CVE-2026-11791

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Source

https://security-tracker.debian.org/tracker/CVE-2026-11791

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11791.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-11791

Upstream

CVE-2026-11791

Published

2026-06-18T16:16:52Z

Modified

2026-09-14T17:01:30Z

Severity

5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H CVSS Calculator

Summary

[none]

Details

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).

References

https://security-tracker.debian.org/tracker/CVE-2026-11791

Affected packages

Debian:12 / 389-ds-base

Package

Name: 389-ds-base
Purl: pkg:deb/debian/389-ds-base?arch=source&distro=bookworm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.3.1+dfsg1-1

2.3.1+dfsg1-1+deb12u1

2.3.4+dfsg1-1

2.3.4+dfsg1-1.1

2.4.4+dfsg1-1

2.4.4+dfsg1-3

2.4.5+dfsg1-1

3.*

3.0.2+dfsg1-1

3.1.1+dfsg1-1

3.1.1+dfsg1-2

3.1.1+dfsg1-3

3.1.2+dfsg1-1

3.1.2+vendor1-1

3.1.2+vendor1-2

3.3.0-1

3.3.0-2

3.3.1-1

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11791.json"

Debian:13 / 389-ds-base