{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2021-47657",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47657",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T01:54:20.727Z",
    "updatedAt": "2026-05-23T15:20:24.416Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "drm/virtio: Ensure that objs is not NULL in virtio_gpu_array_put_free()",
      "summary": "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.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b094fece3810c71ceee6f0921676cb65d4e68c5a"
            },
            {
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ac92b474eeeed75b8660374ba1d129a121c09da8"
            },
            {
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "abc9ad36df16e27ac1c665085157f1a082d39bac"
            },
            {
              "version": "377f8331d0565e6f71ba081c894029a92d0c7e77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6b79f96f4a23846516e5e6e4dd37fc06f43a60dd"
            },
            {
              "version": "244dbb4abe123779ec30e7c6ca283a681aba5c94",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "1016c0f62f73d5d2c3a5d1ad1e1fb0cdce1993ae",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.11.20",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "5.12.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.13"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.13"
            },
            {
              "version": "5.15.32",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.16.18",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.16.*"
            },
            {
              "version": "5.17.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.17.*"
            },
            {
              "version": "5.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}