FKIE_CVE-2026-47333

Vulnerability from fkie_nvd - Published: 2026-05-28 19:16 - Updated: 2026-10-26 13:10
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
security@ubuntu.comhttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=635fa30ed9e944bdb7e811fb8a8906286b4b4f06Patch
Impacted products
Vendor Product Version
canonical ubuntu_linux 24.04
canonical ubuntu_linux 25.10
canonical ubuntu_linux 26.04
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://launchpad.net/ubuntu/+source/",
          "defaultStatus": "unaffected",
          "modules": [
            "AppArmor"
          ],
          "packageName": "linux",
          "product": "Ubuntu Linux",
          "repo": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "6.8.0-124.124",
              "status": "affected",
              "version": "6.8.0",
              "versionType": "dpkg"
            },
            {
              "lessThan": "6.17.0-35.35",
              "status": "affected",
              "version": "6.17.0",
              "versionType": "dpkg"
            },
            {
              "lessThan": "7.0.0-22.22",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "dpkg"
            }
          ]
        }
      ],
      "source": "security@ubuntu.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:*:*:*:*",
              "matchCriteriaId": "62D1BEC7-1A71-4991-A1A5-0E3D282100EC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:25.10:*:*:*:*:*:*:*",
              "matchCriteriaId": "68D562DD-F22D-4310-93C7-7DE817104CAC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:26.04:*:*:*:*:*:*:*",
              "matchCriteriaId": "2BB2642A-AA54-4949-A9FC-0E9673539350",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "Ubuntu Linux 6.8, 6.17 y 7.0 contienen parches SAUCE de AppArmor que pueden potencialmente calcular incorrectamente el tama\u00f1o de un b\u00fafer interno, lo que lleva a una lectura fuera de l\u00edmites de memoria de pila en el c\u00f3digo de manejo de notificaciones. El error puede ser activado por un usuario local no privilegiado y puede resultar en que datos inv\u00e1lidos sean procesados por el motor de pol\u00edticas DFA de AppArmor."
    }
  ],
  "id": "CVE-2026-47333",
  "lastModified": "2026-10-26T13:10:00.140",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "security@ubuntu.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47333",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-28T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-28T19:16:42.073",
  "references": [
    {
      "source": "security@ubuntu.com",
      "tags": [
        "Patch"
      ],
      "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=635fa30ed9e944bdb7e811fb8a8906286b4b4f06"
    }
  ],
  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "security@ubuntu.com",
      "type": "Secondary"
    }
  ]
}



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