CVE-2021-47307 (GCVE-0-2021-47307)
Vulnerability from cvelistv5
Published
2024-05-21 14:35
Modified
2025-05-04 07:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent NULL deref in cifs_compose_mount_options() The optional @ref parameter might contain an NULL node_name, so prevent dereferencing it in cifs_compose_mount_options(). Addresses-Coverity: 1476408 ("Explicit null dereferenced")
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
 Create a notification for this product.
   Linux Linux Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47307",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-12T15:23:12.230114Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-12T15:23:18.690Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:08.503Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/cifs/cifs_dfs_ref.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f7d1fa65e74263d11f90ddd33b4d4cd905a93759",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "e58c162789becede894d3e94c0ce6695a2ef5796",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ae3d181f4e912f51af7776ea165f199b16fc165d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "03313d1c3a2f086bb60920607ab79ac8f8578306",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/cifs/cifs_dfs_ref.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.135",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.13.*",
              "status": "unaffected",
              "version": "5.13.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.135",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.53",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: prevent NULL deref in cifs_compose_mount_options()\n\nThe optional @ref parameter might contain an NULL node_name, so\nprevent dereferencing it in cifs_compose_mount_options().\n\nAddresses-Coverity: 1476408 (\"Explicit null dereferenced\")"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:08:22.855Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759"
        },
        {
          "url": "https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d"
        },
        {
          "url": "https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306"
        }
      ],
      "title": "cifs: prevent NULL deref in cifs_compose_mount_options()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47307",
    "datePublished": "2024-05-21T14:35:26.667Z",
    "dateReserved": "2024-05-21T13:27:52.133Z",
    "dateUpdated": "2025-05-04T07:08:22.855Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47307\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:18.320\",\"lastModified\":\"2024-12-26T18:44:19.590\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncifs: prevent NULL deref in cifs_compose_mount_options()\\n\\nThe optional @ref parameter might contain an NULL node_name, so\\nprevent dereferencing it in cifs_compose_mount_options().\\n\\nAddresses-Coverity: 1476408 (\\\"Explicit null dereferenced\\\")\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: evita la eliminaci\u00f3n de desreferencias NULL en cifs_compose_mount_options() El par\u00e1metro @ref opcional puede contener un nombre de nodo NULL, por lo que se debe evitar eliminar la referencia a \u00e9l en cifs_compose_mount_options(). Direcciones-Cobertura: 1476408 (\\\"Nulo expl\u00edcito desreferenciado\\\")\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.4.135\",\"matchCriteriaId\":\"A710000A-275C-4C73-8384-4FDF4204C682\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.53\",\"matchCriteriaId\":\"08E2D438-D50E-43C5-AF10-D62FE49B5815\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.13.5\",\"matchCriteriaId\":\"808DF8D9-4913-4CC7-B91F-B4146556B7ED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:08.503Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47307\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-12T15:23:12.230114Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-12T15:23:16.008Z\"}}], \"cna\": {\"title\": \"cifs: prevent NULL deref in cifs_compose_mount_options()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"f7d1fa65e742\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"e58c162789be\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"ae3d181f4e91\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f4\", \"lessThan\": \"03313d1c3a2f\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/cifs/cifs_dfs_ref.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.4.135\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.53\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.13.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/cifs/cifs_dfs_ref.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759\"}, {\"url\": \"https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796\"}, {\"url\": \"https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d\"}, {\"url\": \"https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306\"}], \"x_generator\": {\"engine\": \"bippy-9e1c9544281a\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncifs: prevent NULL deref in cifs_compose_mount_options()\\n\\nThe optional @ref parameter might contain an NULL node_name, so\\nprevent dereferencing it in cifs_compose_mount_options().\\n\\nAddresses-Coverity: 1476408 (\\\"Explicit null dereferenced\\\")\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-04T12:03:24.109Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47307\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-04T12:03:24.109Z\", \"dateReserved\": \"2024-05-21T13:27:52.133Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:35:26.667Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.