CVE-2021-47039 (GCVE-0-2021-47039)

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-05-11 13:46
VLAI?
Title
ataflop: potential out of bounds in do_format()
Summary
In the Linux kernel, the following vulnerability has been resolved: ataflop: potential out of bounds in do_format() The function uses "type" as an array index: q = unit[drive].disk[type]->queue; Unfortunately the bounds check on "type" isn't done until later in the function. Fix this by moving the bounds check to the start.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bf9c0538e485b591a2ee02d9adb8a99db4be5a2a , < 07f86aa8f4fe077be1b018cc177eb8c6573e5671 (git)
Affected: bf9c0538e485b591a2ee02d9adb8a99db4be5a2a , < 2a3a8bbca28b899806844c00d49ed1b7ccb50957 (git)
Affected: bf9c0538e485b591a2ee02d9adb8a99db4be5a2a , < 1ffec389a6431782a8a28805830b6fae9bf00af1 (git)
Create a notification for this product.
Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.11.21 , ≤ 5.11.* (semver)
Unaffected: 5.12.4 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47039",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-28T19:19:31.846169Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:14:17.074Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.421Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/ataflop.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "07f86aa8f4fe077be1b018cc177eb8c6573e5671",
              "status": "affected",
              "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a",
              "versionType": "git"
            },
            {
              "lessThan": "2a3a8bbca28b899806844c00d49ed1b7ccb50957",
              "status": "affected",
              "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a",
              "versionType": "git"
            },
            {
              "lessThan": "1ffec389a6431782a8a28805830b6fae9bf00af1",
              "status": "affected",
              "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/ataflop.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "lessThan": "5.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.11.21",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.4",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nataflop: potential out of bounds in do_format()\n\nThe function uses \"type\" as an array index:\n\n\tq = unit[drive].disk[type]-\u003equeue;\n\nUnfortunately the bounds check on \"type\" isn\u0027t done until later in the\nfunction.  Fix this by moving the bounds check to the start."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T13:46:46.494Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1"
        }
      ],
      "title": "ataflop: potential out of bounds in do_format()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47039",
    "datePublished": "2024-02-28T08:13:45.937Z",
    "dateReserved": "2024-02-27T18:42:55.968Z",
    "dateUpdated": "2026-05-11T13:46:46.494Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-47039",
      "date": "2026-05-20",
      "epss": "0.00022",
      "percentile": "0.06114"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.11.21\", \"matchCriteriaId\": \"8CBB94EC-EC33-4464-99C5-03E5542715F0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.12\", \"versionEndExcluding\": \"5.12.4\", \"matchCriteriaId\": \"D8C7052F-1B7B-4327-9C2B-84EBF3243838\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nataflop: potential out of bounds in do_format()\\n\\nThe function uses \\\"type\\\" as an array index:\\n\\n\\tq = unit[drive].disk[type]-\u003equeue;\\n\\nUnfortunately the bounds check on \\\"type\\\" isn\u0027t done until later in the\\nfunction.  Fix this by moving the bounds check to the start.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: ataflop: potencial fuera de los l\\u00edmites en do_format() La funci\\u00f3n utiliza \\\"tipo\\\" como \\u00edndice de matriz: q = unidad[unidad].disco[tipo]-\u0026gt;cola; Desafortunadamente, la verificaci\\u00f3n de los l\\u00edmites en \\\"tipo\\\" no se realiza hasta m\\u00e1s adelante en la funci\\u00f3n. Solucione este problema moviendo la verificaci\\u00f3n de los l\\u00edmites al inicio.\"}]",
      "id": "CVE-2021-47039",
      "lastModified": "2025-01-09T15:31:27.123",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.2}]}",
      "published": "2024-02-28T09:15:39.950",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-125\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47039\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:39.950\",\"lastModified\":\"2025-01-09T15:31:27.123\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nataflop: potential out of bounds in do_format()\\n\\nThe function uses \\\"type\\\" as an array index:\\n\\n\\tq = unit[drive].disk[type]-\u003equeue;\\n\\nUnfortunately the bounds check on \\\"type\\\" isn\u0027t done until later in the\\nfunction.  Fix this by moving the bounds check to the start.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: ataflop: potencial fuera de los l\u00edmites en do_format() La funci\u00f3n utiliza \\\"tipo\\\" como \u00edndice de matriz: q = unidad[unidad].disco[tipo]-\u0026gt;cola; Desafortunadamente, la verificaci\u00f3n de los l\u00edmites en \\\"tipo\\\" no se realiza hasta m\u00e1s adelante en la funci\u00f3n. Solucione este problema moviendo la verificaci\u00f3n de los l\u00edmites al inicio.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.11.21\",\"matchCriteriaId\":\"8CBB94EC-EC33-4464-99C5-03E5542715F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.4\",\"matchCriteriaId\":\"D8C7052F-1B7B-4327-9C2B-84EBF3243838\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.421Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47039\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-02-28T19:19:31.846169Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:13.667Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"ataflop: potential out of bounds in do_format()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"bf9c0538e485b591a2ee02d9adb8a99db4be5a2a\", \"lessThan\": \"07f86aa8f4fe077be1b018cc177eb8c6573e5671\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bf9c0538e485b591a2ee02d9adb8a99db4be5a2a\", \"lessThan\": \"2a3a8bbca28b899806844c00d49ed1b7ccb50957\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bf9c0538e485b591a2ee02d9adb8a99db4be5a2a\", \"lessThan\": \"1ffec389a6431782a8a28805830b6fae9bf00af1\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/block/ataflop.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.11.21\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.11.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/block/ataflop.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671\"}, {\"url\": \"https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957\"}, {\"url\": \"https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nataflop: potential out of bounds in do_format()\\n\\nThe function uses \\\"type\\\" as an array index:\\n\\n\\tq = unit[drive].disk[type]-\u003equeue;\\n\\nUnfortunately the bounds check on \\\"type\\\" isn\u0027t done until later in the\\nfunction.  Fix this by moving the bounds check to the start.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.21\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.4\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"5.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:02:48.800Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47039\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:02:48.800Z\", \"dateReserved\": \"2024-02-27T18:42:55.968Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-28T08:13:45.937Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.