cve-2021-47353
Vulnerability from cvelistv5
Published
2024-05-21 14:35
Modified
2024-11-04 12:04
Severity ?
Summary
udf: Fix NULL pointer dereference in udf_symlink function
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47353",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-23T19:03:03.353127Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:14:54.819Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:08.447Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/udf/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2f3d9ddd32a2",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "371566f63cbd",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "baea588a42d6",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "3638705ecd5a",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "80d505aee639",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "21bf1414580c",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "aebed6b19e51",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "5150877e4d99",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "fa236c2b2d44",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/udf/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.276",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.276",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.240",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.133",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.13.*",
              "status": "unaffected",
              "version": "5.13.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudf: Fix NULL pointer dereference in udf_symlink function\n\nIn function udf_symlink, epos.bh is assigned with the value returned\nby udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c\nand returns the value of sb_getblk function that could be NULL.\nThen, epos.bh is used without any check, causing a possible\nNULL pointer dereference when sb_getblk fails.\n\nThis fix adds a check to validate the value of epos.bh."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:04:17.505Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c"
        },
        {
          "url": "https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9"
        },
        {
          "url": "https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b"
        },
        {
          "url": "https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238"
        },
        {
          "url": "https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02"
        },
        {
          "url": "https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43"
        }
      ],
      "title": "udf: Fix NULL pointer dereference in udf_symlink function",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47353",
    "datePublished": "2024-05-21T14:35:57.122Z",
    "dateReserved": "2024-05-21T14:28:16.986Z",
    "dateUpdated": "2024-11-04T12:04:17.505Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47353\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:21.693\",\"lastModified\":\"2024-05-21T16:54:26.047\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nudf: Fix NULL pointer dereference in udf_symlink function\\n\\nIn function udf_symlink, epos.bh is assigned with the value returned\\nby udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c\\nand returns the value of sb_getblk function that could be NULL.\\nThen, epos.bh is used without any check, causing a possible\\nNULL pointer dereference when sb_getblk fails.\\n\\nThis fix adds a check to validate the value of epos.bh.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: udf: Se corrigi\u00f3 la desreferencia del puntero NULL en la funci\u00f3n udf_symlink. En la funci\u00f3n udf_symlink, a epos.bh se le asigna el valor devuelto por udf_tgetblk. La funci\u00f3n udf_tgetblk est\u00e1 definida en udf/misc.c y devuelve el valor de la funci\u00f3n sb_getblk que podr\u00eda ser NULL. Luego, epos.bh se usa sin ninguna verificaci\u00f3n, lo que provoca una posible desreferencia del puntero NULL cuando falla sb_getblk. Esta soluci\u00f3n agrega una verificaci\u00f3n para validar el valor de epos.bh.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




  • 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.