gsd-2021-4002
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
Aliases
Aliases
CVE-2021-4002


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-4002",
    "description": "A memory leak flaw in the Linux kernel\u0027s hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.",
    "id": "GSD-2021-4002",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-4002.html",
      "https://www.debian.org/security/2022/dsa-5096",
      "https://ubuntu.com/security/CVE-2021-4002",
      "https://advisories.mageia.org/CVE-2021-4002.html",
      "https://security.archlinux.org/CVE-2021-4002",
      "https://alas.aws.amazon.com/cve/html/CVE-2021-4002.html",
      "https://linux.oracle.com/cve/CVE-2021-4002.html",
      "https://access.redhat.com/errata/RHSA-2022:1975",
      "https://access.redhat.com/errata/RHSA-2022:1988"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-4002"
      ],
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      "id": "GSD-2021-4002",
      "modified": "2023-12-13T01:23:11.659032Z",
      "schema_version": "1.4.0"
    }
  },
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 3.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
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            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2023-02-22T17:46Z",
      "publishedDate": "2022-03-03T22:15Z"
    }
  }
}


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