Vulnerability-Lookup

FKIE_CVE-2021-47478

Vulnerability from fkie_nvd - Published: 2024-05-22 09:15 - Updated: 2026-08-04 10:17

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Summary

In the Linux kernel, the following vulnerability has been resolved: isofs: Fix out of bound access for corrupted isofs image When isofs image is suitably corrupted isofs_read_inode() can read data beyond the end of buffer. Sanity-check the directory entry length before using it.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b2fa1f52d22c5455217b294629346ad23a744945	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e7fb722586a2936b37bdff096c095c30ca06404d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e96a1866b40570b5950cda8602c2819189c62a48	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/6e80e9314f8bb52d9eabe1907698718ff01120f5	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/86d4aedcbc69c0f84551fb70f953c24e396de2d7	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/9ec33a9b8790c212cc926a88c5e2105f97f3f57e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/afbd40f425227e661d991757e11cc4db024e761f	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/b0ddff8d68f2e43857a84dce54c3deab181c8ae1	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/b2fa1f52d22c5455217b294629346ad23a744945	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/e7fb722586a2936b37bdff096c095c30ca06404d	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/e96a1866b40570b5950cda8602c2819189c62a48	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/isofs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
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              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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              "status": "affected",
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            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/isofs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.292",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.290",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.255",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.217",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.14.*",
              "status": "unaffected",
              "version": "5.14.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E44D7B05-DE06-4714-AB39-F8242F1E49F2",
              "versionEndExcluding": "4.4.292",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "4.19.217",
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            {
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AD6F772D-D9E4-4B9B-9E3C-CD5635E9E88D",
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              "versionStartIncluding": "5.11",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9BFCBC65-4DA5-4C88-B852-E7B052DE9F20",
              "versionEndExcluding": "5.15.2",
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              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nisofs: Fix out of bound access for corrupted isofs image\n\nWhen isofs image is suitably corrupted isofs_read_inode() can read data\nbeyond the end of buffer. Sanity-check the directory entry length before\nusing it."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: isofs: corrige el acceso fuera de los l\u00edmites para una imagen isofs corrupta. Cuando la imagen isofs est\u00e1 adecuadamente da\u00f1ada, isofs_read_inode() puede leer datos m\u00e1s all\u00e1 del final del b\u00fafer. Cordura: verifique la longitud de la entrada del directorio antes de usarla."
    }
  ],
  "id": "CVE-2021-47478",
  "lastModified": "2026-08-04T10:17:04.857",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47478",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-29T18:36:21.366364Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-22T09:15:09.747",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/156ce5bb6cc43a80a743810199defb1dc3f55b7f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "Patch"
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    },
    {
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    },
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

CVE-2021-47478 (GCVE-0-2021-47478)

Vulnerability from cvelistv5 – Published: 2024-05-22 08:19 – Updated: 2026-08-05 08:47

Title

isofs: Fix out of bound access for corrupted isofs image

Summary

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-29 18:36 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

Linux mitre root Scorecard

References

9 references

URL	Tags
https://git.kernel.org/stable/c/156ce5bb6cc43a80a…
https://git.kernel.org/stable/c/9ec33a9b8790c212c…
https://git.kernel.org/stable/c/afbd40f425227e661…
https://git.kernel.org/stable/c/b0ddff8d68f2e4385…
https://git.kernel.org/stable/c/6e80e9314f8bb52d9…
https://git.kernel.org/stable/c/86d4aedcbc69c0f84…
https://git.kernel.org/stable/c/b2fa1f52d22c54552…
https://git.kernel.org/stable/c/e7fb722586a2936b3…
https://git.kernel.org/stable/c/e96a1866b40570b59…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 156ce5bb6cc43a80a743810199defb1dc3f55b7f (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9ec33a9b8790c212cc926a88c5e2105f97f3f57e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < afbd40f425227e661d991757e11cc4db024e761f (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b0ddff8d68f2e43857a84dce54c3deab181c8ae1 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6e80e9314f8bb52d9eabe1907698718ff01120f5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 86d4aedcbc69c0f84551fb70f953c24e396de2d7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b2fa1f52d22c5455217b294629346ad23a744945 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e7fb722586a2936b37bdff096c095c30ca06404d (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e96a1866b40570b5950cda8602c2819189c62a48 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 4.4.292 , ≤ 4.4.* (semver) Unaffected: 4.9.290 , ≤ 4.9.* (semver) Unaffected: 4.14.255 , ≤ 4.14.* (semver) Unaffected: 4.19.217 , ≤ 4.19.* (semver) Unaffected: 5.4.159 , ≤ 5.4.* (semver) Unaffected: 5.10.79 , ≤ 5.10.* (semver) Unaffected: 5.14.18 , ≤ 5.14.* (semver) Unaffected: 5.15.2 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix)

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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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FKIE_CVE-2021-47478

CVE-2021-47478 (GCVE-0-2021-47478)

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