FKIE_CVE-2021-27365

Vulnerability from fkie_nvd - Published: 2021-03-07 05:15 - Updated: 2026-07-30 19:20
Summary
An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.
References
cve@mitre.orghttp://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.htmlThird Party Advisory, VDB Entry
cve@mitre.orghttps://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.htmlExploit, Third Party Advisory
cve@mitre.orghttps://bugzilla.suse.com/show_bug.cgi?id=1182715Issue Tracking, Third Party Advisory
cve@mitre.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7eeMailing List, Patch, Vendor Advisory
cve@mitre.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5Mailing List, Patch, Vendor Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/03/msg00035.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2021/03/06/1Mailing List, Third Party Advisory
cve@mitre.orghttps://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.htmlExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=1182715Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7eeMailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/03/msg00035.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2021/03/06/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
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              "vulnerable": true
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              "versionEndExcluding": "4.4.260",
              "vulnerable": true
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              "versionEndIncluding": "7.7.1",
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    },
    {
      "nodes": [
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          "negate": false,
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      ],
      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en el kernel de Linux versiones  hasta 5.11.3.\u0026#xa0;Determinadas estructuras de datos iSCSI no tienen restricciones de longitud o comprobaciones apropiadas y pueden exceder el valor PAGE_SIZE.\u0026#xa0;Un usuario sin privilegios puede enviar un mensaje de Netlink que est\u00e1 asociado con iSCSI y tiene una longitud de hasta la longitud m\u00e1xima de un mensaje de Netlink"
    }
  ],
  "id": "CVE-2021-27365",
  "lastModified": "2026-07-30T19:20:10.397",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "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": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-07T05:15:13.623",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1182715"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Patch",
        "Vendor Advisory"
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    },
    {
      "source": "cve@mitre.org",
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    {
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "VDB Entry"
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      "url": "http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      ],
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "tags": [
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        "Patch",
        "Vendor Advisory"
      ],
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    },
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    },
    {
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    {
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      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
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  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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