{
  "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-2021-47060",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47060",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-29T22:37:34.885Z",
    "updatedAt": "2026-08-05T08:45:46.354Z",
    "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": "KVM: Stop looking for coalesced MMIO zones if the bus is destroyed",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Stop looking for coalesced MMIO zones if the bus is destroyed\n\nAbort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev()\nfails to allocate memory for the new instance of the bus.  If it can't\ninstantiate a new bus, unregister_dev() destroys all devices _except_ the\ntarget device.   But, it doesn't tell the caller that it obliterated the\nbus and invoked the destructor for all devices that were on the bus.  In\nthe coalesced MMIO case, this can result in a deleted list entry\ndereference due to attempting to continue iterating on coalesced_zones\nafter future entries (in the walk) have been deleted.\n\nOpportunistically add curly braces to the for-loop, which encompasses\nmany lines but sneaks by without braces due to the guts being a single\nif statement.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "41b2ea7a6a11e2b1a7f2c29e1675a709a6b2b98d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7d1bc32d6477ff96a32695ea4be8144e4513ab2d"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2a20592baff59c5351c5200ec667e1a2aa22af85"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "168e82f640ed1891a700bdb43e37da354b2ab63c"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "50cbad42bfea8c052b7ca590bd4126cdc898713c"
            },
            {
              "version": "f65886606c2d3b562716de030706dfe1bea4ed5e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5d3c4c79384af06e3c8e25b7770b6247496b4417"
            },
            {
              "version": "f0dfffce3f4ffd5f822568a4a6fb34c010e939d1",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "840e124f89a5127e7eb97ebf377f4b8ca745c070",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "40a023f681befd9b2862a3c16fb306a38b359ae5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "19184bd06f488af62924ff1747614a8cb284ad63",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "68c125324b5e1d1d22805653735442923d896a1d",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.66",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.119"
            },
            {
              "version": "4.4.238",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.5"
            },
            {
              "version": "4.9.238",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.10"
            },
            {
              "version": "4.14.200",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "4.19.148",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.8.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.9"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.4.119",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.37",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.21",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}