DEBIAN-CVE-2026-9064
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.
DEBIAN-CVE-2026-9064
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-9064
389-ds-base
Source reference: /affected/0/package/name
- Affected versions
- 2.3.1+dfsg1-1
Source reference:
/affected/0/versions2.3.1+dfsg1-1+deb12u1Source reference:
/affected/0/versions2.3.4+dfsg1-1Source reference:
/affected/0/versions2.3.4+dfsg1-1.1Source reference:
/affected/0/versions2.4.4+dfsg1-1Source reference:
/affected/0/versions2.4.4+dfsg1-3Source reference:
/affected/0/versions2.4.5+dfsg1-1Source reference:
/affected/0/versions3.0.2+dfsg1-1Source reference:
/affected/0/versions3.1.1+dfsg1-1Source reference:
/affected/0/versions3.1.1+dfsg1-2Source reference:
/affected/0/versions3.1.1+dfsg1-3Source reference:
/affected/0/versions3.1.2+dfsg1-1Source reference:
/affected/0/versions3.1.2+vendor1-1Source reference:
/affected/0/versions3.1.2+vendor1-2Source reference:
/affected/0/versions3.3.0-1Source reference:
/affected/0/versions3.3.0-2Source reference:
/affected/0/versions3.3.1-1Source reference:
/affected/0/versions3.3.1-3Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
389-ds-base
Source reference: /affected/1/package/name
- Affected versions
- 3.1.2+dfsg1-1
Source reference:
/affected/1/versions3.1.2+dfsg1-1+deb13u1Source reference:
/affected/1/versions3.1.2+vendor1-1Source reference:
/affected/1/versions3.1.2+vendor1-2Source reference:
/affected/1/versions3.3.0-1Source reference:
/affected/1/versions3.3.0-2Source reference:
/affected/1/versions3.3.1-1Source reference:
/affected/1/versions3.3.1-3Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "389-ds-base",
"purl": "pkg:deb/debian/389-ds-base?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"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",
"3.0.2+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",
"3.3.1-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9064.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "389-ds-base",
"purl": "pkg:deb/debian/389-ds-base?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.1.2+dfsg1-1",
"3.1.2+dfsg1-1+deb13u1",
"3.1.2+vendor1-1",
"3.1.2+vendor1-2",
"3.3.0-1",
"3.3.0-2",
"3.3.1-1",
"3.3.1-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9064.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58562 · Revision 1
- Added to Heist Feed
- Publisher date