[From nobody Wed Sep  9 14:07:15 2026
Received: (at submit) by bugs.debian.org; 15 Aug 2026 14:52:49 +0000
X-Spam-Checker-Version: SpamAssassin 4.0.1-bugs.debian.org_2005_01_02
 (2024-03-25) on buxtehude.debian.org
X-Spam-Level: 
X-Spam-Status: No, score=-9.9 required=4.0 tests=BAYES_00, FOURLA,
 FROMDEVELOPER, 
 NO_RELAYS,XMAILER_REPORTBUG autolearn=ham autolearn_force=no
 version=4.0.1-bugs.debian.org_2005_01_02
X-Spam-Bayes: score:0.0000 Tokens: new, 15; hammy, 149; neutral, 47; spammy,
 1. spammytokens:0.940-+--H*r:bugs.debian.org
 hammytokens:0.000-+--XDebbugsCc, 0.000-+--X-Debbugs-Cc,
 0.000-+--H*F:U*carnil, 0.000-+--H*Ad:N*Bug, 0.000-+--HTo:N*Debian
Return-path: <carnil@debian.org>
Received: via submission by buxtehude.debian.org with esmtp (Exim 4.96)
 (envelope-from <carnil@debian.org>) id 1wvFke-006tnr-0H
 for submit@bugs.debian.org; Sat, 15 Aug 2026 14:52:49 +0000
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: 389-ds-base: CVE-2026-18663
Message-ID: <178680556713.1666594.8478568246711497645.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0+nmu1
Date: Sat, 15 Aug 2026 16:52:47 +0200
Delivered-To: submit@bugs.debian.org

Source: 389-ds-base
Version: 3.3.0-2
Severity: grave
Tags: security upstream
Justification: user security hole
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for 389-ds-base.

At time of writing only the bugzilla entry from Red Hat was known to
me.

CVE-2026-18663[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-18663
    https://www.cve.org/CVERecord?id=CVE-2026-18663
[1] https://bugzilla.redhat.com/show_bug.cgi?id=2510631

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]