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DEBIAN-CVE-2026-90463

Type: advisorySource: OSV1 source record

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service (DoS) by crashing the NSS responder process. While unprivileged local clients can typically reach the socket, there is no evidence of privilege escalation or reliable data disclosure.

Announced 14 Sept 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-90463

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-2026-90463

sssd

Source reference: /affected/0/package/name

Affected versions: 2.10.1-1
Source reference: /affected/0/versions
2.10.1-2
Source reference: /affected/0/versions
2.11.1-1
Source reference: /affected/0/versions
2.11.1-2
Source reference: /affected/0/versions
2.11.1-2.1
Source reference: /affected/0/versions
2.12.0-1
Source reference: /affected/0/versions
2.12.0-2
Source reference: /affected/0/versions
2.12.0-3~exp0
Source reference: /affected/0/versions
2.12.0-4
Source reference: /affected/0/versions
2.13.1-1
Source reference: /affected/0/versions
2.13.1-2
Source reference: /affected/0/versions
2.13.1-3
Source reference: /affected/0/versions
2.8.2-4
Source reference: /affected/0/versions
2.8.2-4+deb12u1
Source reference: /affected/0/versions
2.9.1-1
Source reference: /affected/0/versions
2.9.1-2
Source reference: /affected/0/versions
2.9.2-1
Source reference: /affected/0/versions
2.9.4-1
Source reference: /affected/0/versions
2.9.4-1.1
Source reference: /affected/0/versions
2.9.4-1.1~exp1
Source reference: /affected/0/versions
2.9.4-2
Source reference: /affected/0/versions
2.9.5-1
Source reference: /affected/0/versions
2.9.5-2
Source reference: /affected/0/versions
2.9.5-3
Source reference: /affected/0/versions
2.9.5-4
Source reference: /affected/0/versions
2.9.5-5
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

sssd

Source reference: /affected/1/package/name

Affected versions: 2.10.1-2
Source reference: /affected/1/versions
2.11.1-1
Source reference: /affected/1/versions
2.11.1-2
Source reference: /affected/1/versions
2.11.1-2.1
Source reference: /affected/1/versions
2.12.0-1
Source reference: /affected/1/versions
2.12.0-2
Source reference: /affected/1/versions
2.12.0-3~exp0
Source reference: /affected/1/versions
2.12.0-4
Source reference: /affected/1/versions
2.13.1-1
Source reference: /affected/1/versions
2.13.1-2
Source reference: /affected/1/versions
2.13.1-3
Source 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": "sssd",
      "purl": "pkg:deb/debian/sssd?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.10.1-1",
      "2.10.1-2",
      "2.11.1-1",
      "2.11.1-2",
      "2.11.1-2.1",
      "2.12.0-1",
      "2.12.0-2",
      "2.12.0-3~exp0",
      "2.12.0-4",
      "2.13.1-1",
      "2.13.1-2",
      "2.13.1-3",
      "2.8.2-4",
      "2.8.2-4+deb12u1",
      "2.9.1-1",
      "2.9.1-2",
      "2.9.2-1",
      "2.9.4-1",
      "2.9.4-1.1",
      "2.9.4-1.1~exp1",
      "2.9.4-2",
      "2.9.5-1",
      "2.9.5-2",
      "2.9.5-3",
      "2.9.5-4",
      "2.9.5-5"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90463.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "sssd",
      "purl": "pkg:deb/debian/sssd?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.10.1-2",
      "2.11.1-1",
      "2.11.1-2",
      "2.11.1-2.1",
      "2.12.0-1",
      "2.12.0-2",
      "2.12.0-3~exp0",
      "2.12.0-4",
      "2.13.1-1",
      "2.13.1-2",
      "2.13.1-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-90463.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58413 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 17:59:24 GMT
Publisher date: Mon, 14 Sep 2026 16:17:23 GMT

Read the original announcement