{
  "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-2026-98262",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98262",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-06T08:45:26.118Z",
    "updatedAt": "2026-10-19T09:16:33.319Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "ata: libahci: clear PxCLBU and PxFBU for AHCI_HFLAG_32BIT_ONLY",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nata: libahci: clear PxCLBU and PxFBU for AHCI_HFLAG_32BIT_ONLY\n\nA user reported that commit 105c42566a55 (\"ata: ahci: force 32-bit DMA for\nJMicron JMB582/JMB585\") made the JMicron JMB585 unusable on his board.\n\nThe failure is seen as soon as the ahci driver is probed, and booting with\niommu=off does not solve the problem.\n\nLooking at the AHCI specification, PxCLBU and PxFBU are both read only '0'\nfor HBAs that do not support 64-bit addressing.\n\nFor HBAs that do support 64-bit addressing, the registers are read write,\nwith a reset value that is Implementation Specific.\n\nWhen using the AHCI_HFLAG_32BIT_ONLY flag, the HBA does support 64-bit\naddressing, and a 32-bit DMA mask is set by simply clearing HOST_CAP_64.\nThus, in this case, we need to explicitly clear the registers to 0.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0191c9ff23ef1678dbfb5ad253a2dee92feb5d71"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8f510f68208a1f673d7c7234a687be4671490e9c"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4719424bb7cb9f20b73986bcb72dd528f0e5c6eb"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a5a8b4737f68bbac8aa0685af0c8921e6003c22b"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b28a17d4a9bb0aa38b48681c3927b012ba40eabe"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b691a3e244278362e552439d6d3ee5a5d3703488"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7912ad8fb5233bb8cfe21d50df639c7f4854ff9d"
            },
            {
              "version": "c7a42156d99bcea7f8173ba7a6034bbaa2ecb77c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "82e47533221d4746947b74d2e79a478c36c6433a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.22",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.22"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.112",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}