FKIE_CVE-2026-47328

Vulnerability from fkie_nvd - Published: 2026-05-28 19:16 - Updated: 2026-10-26 13:10
Severity
6.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Summary
Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.
References
security@ubuntu.comhttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=7f3c4902c39432ce7ea0d384cb70eba282247facPatch
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 incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion."
    },
    {
      "lang": "es",
      "value": "Ubuntu Linux 6.8, 6.17 y 7.0 contienen parches SAUCE de AppArmor que intentan liberar incorrectamente un puntero que no hab\u00eda sido previamente asignado con kmalloc(), mientras que, al mismo tiempo, fugan memoria asignada. El error puede ser activado por un usuario local sin privilegios y puede resultar en la corrupci\u00f3n de los metadatos de slab y podr\u00eda llevar al agotamiento de recursos."
    }
  ],
  "id": "CVE-2026-47328",
  "lastModified": "2026-10-26T13:10:00.140",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2,
        "source": "security@ubuntu.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-47328",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-28T19:20:06.494860Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-28T19:16:40.687",
  "references": [
    {
      "source": "security@ubuntu.com",
      "tags": [
        "Patch"
      ],
      "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=7f3c4902c39432ce7ea0d384cb70eba282247fac"
    }
  ],
  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-590"
        }
      ],
      "source": "security@ubuntu.com",
      "type": "Secondary"
    }
  ]
}



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