« Volver al listado

CVE-2026-47333

Estado: AnalizadaAlta (7.8)—

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the size of an internal buffer, leading to a heap memory out-of-bounds read in notification handling code. The bug can be triggered by an unprivileged local user and can result in invalid data being processed by the AppArmor DFA policy engine.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L) sin interacción (UI:N) que requiere usuario sin privilegios (PR:L). La lectura fuera de límites en AppArmor puede extraer datos sensibles de memoria, potencialmente escalando a root. CWE-125 corrobora lectura de buffer fuera de límites.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareData Loss Prevention

Tecnologías afectadas (1)

Canonical — Ubuntu Linux

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-47333",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47333",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-28T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@ubuntu.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@ubuntu.com",
      "affectedData": [
        {
          "repo": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/",
          "vendor": "Canonical",
          "modules": [
            "AppArmor"
          ],
          "product": "Ubuntu Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8.0",
              "lessThan": "6.8.0-124.124",
              "versionType": "dpkg"
            },
            {
              "status": "affected",
              "version": "6.17.0",
              "lessThan": "6.17.0-35.35",
              "versionType": "dpkg"
            },
            {
              "status": "affected",
              "version": "7.0.0",
              "lessThan": "7.0.0-22.22",
              "versionType": "dpkg"
            }
          ],
          "packageName": "linux",
          "collectionURL": "https://launchpad.net/ubuntu/+source/",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-28T19:16:42.073",
  "references": [
    {
      "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=635fa30ed9e944bdb7e811fb8a8906286b4b4f06",
      "tags": [
        "Patch"
      ],
      "source": "security@ubuntu.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@ubuntu.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the size of an internal buffer, leading to a heap memory out-of-bounds read in notification handling code. The bug can be triggered by an unprivileged local user and can result in invalid data being processed by the AppArmor DFA policy engine."
    }
  ],
  "lastModified": "2026-06-17T10:54:31.563",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "62D1BEC7-1A71-4991-A1A5-0E3D282100EC"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:25.10:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "68D562DD-F22D-4310-93C7-7DE817104CAC"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:26.04:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2BB2642A-AA54-4949-A9FC-0E9673539350"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@ubuntu.com"
}