FKIE_CVE-2021-47050

Vulnerability from fkie_nvd - Published: 2024-02-28 09:15 - Updated: 2026-06-17 04:16
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: memory: renesas-rpc-if: fix possible NULL pointer dereference of resource The platform_get_resource_byname() can return NULL which would be immediately dereferenced by resource_size(). Instead dereference it after validating the resource. Addresses-Coverity: Dereference null return value
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910adPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910adPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/memory/renesas-rpc-if.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "71bcc1b4a1743534d8abdcb57ff912e6bc390438",
              "status": "affected",
              "version": "ca7d8b980b67f133317525c4273e144116ee1ae5",
              "versionType": "git"
            },
            {
              "lessThan": "e16acc3a37f09e18835dc5d8014942c2ef6ca957",
              "status": "affected",
              "version": "ca7d8b980b67f133317525c4273e144116ee1ae5",
              "versionType": "git"
            },
            {
              "lessThan": "a74cb41af7dbe019e4096171f8bc641c7ce910ad",
              "status": "affected",
              "version": "ca7d8b980b67f133317525c4273e144116ee1ae5",
              "versionType": "git"
            },
            {
              "lessThan": "59e27d7c94aa02da039b000d33c304c179395801",
              "status": "affected",
              "version": "ca7d8b980b67f133317525c4273e144116ee1ae5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/memory/renesas-rpc-if.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.37",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BFD29FB7-96E7-40B2-A1A7-AFA8D43EC498",
              "versionEndExcluding": "5.10.37",
              "versionStartIncluding": "5.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CBB94EC-EC33-4464-99C5-03E5542715F0",
              "versionEndExcluding": "5.11.21",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838",
              "versionEndExcluding": "5.12.4",
              "versionStartIncluding": "5.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemory: renesas-rpc-if: fix possible NULL pointer dereference of resource\n\nThe platform_get_resource_byname() can return NULL which would be\nimmediately dereferenced by resource_size().  Instead dereference it\nafter validating the resource.\n\nAddresses-Coverity: Dereference null return value"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: memoria: renesas-rpc-if: corrige posible desreferencia del puntero NULL del recurso Platform_get_resource_byname() puede devolver NULL, que ser\u00eda inmediatamente desreferenciado por Resource_size(). En su lugar, elimine la referencia despu\u00e9s de validar el recurso. Direcciones-Cobertura: Desreferencia valor de retorno nulo"
    }
  ],
  "id": "CVE-2021-47050",
  "lastModified": "2026-06-17T04:16:18.810",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47050",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T15:57:38.397126Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-28T09:15:40.467",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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