FKIE_CVE-2021-47657

Vulnerability from fkie_nvd - Published: 2025-02-26 06:37 - Updated: 2026-06-17 04:18
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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: drm/virtio: Ensure that objs is not NULL in virtio_gpu_array_put_free() If virtio_gpu_object_shmem_init() fails (e.g. due to fault injection, as it happened in the bug report by syzbot), virtio_gpu_array_put_free() could be called with objs equal to NULL. Ensure that objs is not NULL in virtio_gpu_array_put_free(), or otherwise return from the function.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6b79f96f4a23846516e5e6e4dd37fc06f43a60ddPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abc9ad36df16e27ac1c665085157f1a082d39bacPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac92b474eeeed75b8660374ba1d129a121c09da8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b094fece3810c71ceee6f0921676cb65d4e68c5aPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/virtio/virtgpu_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b094fece3810c71ceee6f0921676cb65d4e68c5a",
              "status": "affected",
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "versionType": "git"
            },
            {
              "lessThan": "ac92b474eeeed75b8660374ba1d129a121c09da8",
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "versionType": "git"
            },
            {
              "lessThan": "6b79f96f4a23846516e5e6e4dd37fc06f43a60dd",
              "status": "affected",
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "244dbb4abe123779ec30e7c6ca283a681aba5c94",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1016c0f62f73d5d2c3a5d1ad1e1fb0cdce1993ae",
              "versionType": "git"
            },
            {
              "lessThan": "5.12",
              "status": "affected",
              "version": "5.11.20",
              "versionType": "semver"
            },
            {
              "lessThan": "5.13",
              "status": "affected",
              "version": "5.12.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/virtio/virtgpu_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.32",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CC8679E8-F4E0-4BBF-8682-F0CDCBC99C1E",
              "versionEndExcluding": "5.12",
              "versionStartIncluding": "5.11.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8A712A85-BED7-44CD-A617-EFD0ABBF4FCC",
              "versionEndExcluding": "5.15.32",
              "versionStartIncluding": "5.12.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C86410A0-E312-4F41-93E9-929EAFB31757",
              "versionEndExcluding": "5.16.18",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3004D9BF-0093-4C9C-8560-F3E91AFAE409",
              "versionEndExcluding": "5.17.1",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: Ensure that objs is not NULL in virtio_gpu_array_put_free()\n\nIf virtio_gpu_object_shmem_init() fails (e.g. due to fault injection, as it\nhappened in the bug report by syzbot), virtio_gpu_array_put_free() could be\ncalled with objs equal to NULL.\n\nEnsure that objs is not NULL in virtio_gpu_array_put_free(), or otherwise\nreturn from the function."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/virtio: Aseg\u00farese de que objs no sea NULL en virtio_gpu_array_put_free() Si virtio_gpu_object_shmem_init() falla (por ejemplo, debido a la inyecci\u00f3n de fallos, como sucedi\u00f3 en el informe de error de syzbot), se podr\u00eda llamar a virtio_gpu_array_put_free() con objs igual a NULL. Aseg\u00farese de que objs no sea NULL en virtio_gpu_array_put_free() o, de lo contrario, regrese de la funci\u00f3n."
    }
  ],
  "id": "CVE-2021-47657",
  "lastModified": "2026-06-17T04:18:15.883",
  "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"
      },
      {
        "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47657",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-01T19:50:10.176030Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-02-26T06:37:07.467",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6b79f96f4a23846516e5e6e4dd37fc06f43a60dd"
    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/abc9ad36df16e27ac1c665085157f1a082d39bac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/ac92b474eeeed75b8660374ba1d129a121c09da8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/b094fece3810c71ceee6f0921676cb65d4e68c5a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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