{
  "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-2021-47170",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47170",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-03-25T09:16:22.313Z",
    "updatedAt": "2026-05-11T13:49:19.855Z",
    "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": "USB: usbfs: Don't WARN about excessively large memory allocations",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: usbfs: Don't WARN about excessively large memory allocations\n\nSyzbot found that the kernel generates a WARNing if the user tries to\nsubmit a bulk transfer through usbfs with a buffer that is way too\nlarge.  This isn't a bug in the kernel; it's merely an invalid request\nfrom the user and the usbfs code does handle it correctly.\n\nIn theory the same thing can happen with async transfers, or with the\npacket descriptor table for isochronous transfers.\n\nTo prevent the MM subsystem from complaining about these bad\nallocation requests, add the __GFP_NOWARN flag to the kmalloc calls\nfor these buffers.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "add1aaeabe6b08ed26381a2a06e505b2f09c3ba5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ab21d6e1411999b5fb43434f421f00bf50002eb"
            },
            {
              "version": "add1aaeabe6b08ed26381a2a06e505b2f09c3ba5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2c835fede13e03f2743a333e4370b5ed2db91e83"
            },
            {
              "version": "add1aaeabe6b08ed26381a2a06e505b2f09c3ba5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8d83f109e920d2776991fa142bb904d985dca2ed"
            },
            {
              "version": "add1aaeabe6b08ed26381a2a06e505b2f09c3ba5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098"
            },
            {
              "version": "add1aaeabe6b08ed26381a2a06e505b2f09c3ba5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.3"
            },
            {
              "version": "4.19.193",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.124",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.42",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.12.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}