{
  "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-2021-47105",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47105",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-03-04T18:15:14.355Z",
    "updatedAt": "2026-05-11T13:48:09.635Z",
    "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": "ice: xsk: return xsk buffers back to pool when cleaning the ring",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: xsk: return xsk buffers back to pool when cleaning the ring\n\nCurrently we only NULL the xdp_buff pointer in the internal SW ring but\nwe never give it back to the xsk buffer pool. This means that buffers\ncan be leaked out of the buff pool and never be used again.\n\nAdd missing xsk_buff_free() call to the routine that is supposed to\nclean the entries that are left in the ring so that these buffers in the\numem can be used by other sockets.\n\nAlso, only go through the space that is actually left to be cleaned\ninstead of a whole ring.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2d4238f5569722197612656163d824098208519c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ad6d20da2cfbe14b7b1200d15f39e65988b0b9e8"
            },
            {
              "version": "2d4238f5569722197612656163d824098208519c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "afe8a3ba85ec2a6b6849367e25c06a2f8e0ddd05"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.15.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.16",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}