{
  "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-2021-47239",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47239",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T14:19:39.705Z",
    "updatedAt": "2026-05-11T13:50:39.132Z",
    "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": "net: usb: fix possible use-after-free in smsc75xx_bind",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: fix possible use-after-free in smsc75xx_bind\n\nThe commit 46a8b29c6306 (\"net: usb: fix memory leak in smsc75xx_bind\")\nfails to clean up the work scheduled in smsc75xx_reset->\nsmsc75xx_set_multicast, which leads to use-after-free if the work is\nscheduled to start after the deallocation. In addition, this patch\nalso removes a dangling pointer - dev->data[0].\n\nThis patch calls cancel_work_sync to cancel the scheduled work and set\nthe dangling pointer to NULL.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "200dbfcad8011e50c3cec269ed7b980836eeb1fa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7cc8b2e05fcea6edd022d26e82091d781af8fd9b"
            },
            {
              "version": "22c840596af0c09068b6cf948616e6496e59e07f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "64160d1741a3de5204d1a822e058e0b4cc526504"
            },
            {
              "version": "9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c4e3be2e7742863e454ce31faf8fd0109c00050b"
            },
            {
              "version": "9e6a3eccb28779710cbbafc4f4258d92509c6d07",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b"
            },
            {
              "version": "b95fb96e6339e34694dd578fb6bde3575b01af17",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4252bf6c2b245f47011098113d405ffad6ad5d5b"
            },
            {
              "version": "635ac38b36255d3cfb8312cf7c471334f4d537e0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb"
            },
            {
              "version": "70c886ac93f87ae7214a0c69151a28a8075dd95b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "14616c372a7be01a2fb8c56c9d8debd232b9e43d"
            },
            {
              "version": "46a8b29c6306d8bbfd92b614ef65a47c900d8e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "56b786d86694e079d8aad9b314e015cd4ac02a3d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.4.271",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.4.274"
            },
            {
              "version": "4.9.271",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.9.274"
            },
            {
              "version": "4.14.235",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.14.238"
            },
            {
              "version": "4.19.193",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.19.196"
            },
            {
              "version": "5.4.124",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.128"
            },
            {
              "version": "5.10.42",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.46"
            },
            {
              "version": "5.12.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.12.13"
            }
          ]
        }
      ]
    }
  }
}