{
  "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-2026-43220",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43220",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-06T11:28:20.905Z",
    "updatedAt": "2026-05-17T15:21:38.711Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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": "iommu/amd: serialize sequence allocation under concurrent TLB invalidations",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: serialize sequence allocation under concurrent TLB invalidations\n\nWith concurrent TLB invalidations, completion wait randomly gets timed out\nbecause cmd_sem_val was incremented outside the IOMMU spinlock, allowing\nCMD_COMPL_WAIT commands to be queued out of sequence and breaking the\nordering assumption in wait_on_sem().\nMove the cmd_sem_val increment under iommu->lock so completion sequence\nallocation is serialized with command queuing.\nAnd remove the unnecessary return.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f2f65b28d802a667119147444ec2ae33eebf9a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d51bf43193b1e95dc4e34e540dc76e19def2ae5a"
            },
            {
              "version": "715c263119fd1b918a9fcbd8a36ea5b604a46324",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fca7aa0264ae99e5ff287d0ced5af0b82b121c4f"
            },
            {
              "version": "e15768e68820142077bbca402d8e902f64ade1b0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5000ce7fcb31067566a1a1a2e5b5bbff93625242"
            },
            {
              "version": "496269d12072ecb219826485bdbec70c92a8eef5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "48caa7542a795c9679ec1bd1bc2592e05a7369a4"
            },
            {
              "version": "d2a0cac10597068567d336e85fa3cbdbe8ca62bf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9e249c48412828e807afddc21527eb734dc9bd3d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6.6.128",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.140"
            },
            {
              "version": "6.12.75",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.88"
            }
          ]
        }
      ]
    }
  }
}