{
  "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-2026-89458",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89458",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:43:21.346Z",
    "updatedAt": "2026-10-19T08:47:07.708Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "s390/dasd: Do not complete a failed ESE read as successful",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Do not complete a failed ESE read as successful\n\ndasd_int_handler() completes an NRF read of an unallocated ESE track by\ncalling ese_read() and unconditionally marking the request\nDASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has\nzeroed the destination buffer: a failed sense-data parse or a current\ntrack outside the requested range both return early, leaving the\ndestination pages untouched. The request is still completed successfully,\nso the block layer is handed stale / uninitialized memory instead of\nzeros.\n\nCheck the ese_read() return value and fail the request through the normal\nerror path instead of forcing DASD_CQR_SUCCESS.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8cb96cffceead3cbd0541154d7ecc5e6474edda1"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "77168af195d04b34c6de62b874624e74d64cef8d"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "921ff697bb6f7067059793becf8b2d00de71ce41"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55f4df40178cdfede0d7ae848fbab00efa9b95c1"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c9adf8399732306dfc97b3adb4778038743e3f5e"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "52b331c99baac653ca794bd8487c8ec4de8db203"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f"
            },
            {
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cddb447c62466f3076938ce120028d7b591f9f37"
            },
            {
              "version": "fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5f7c9989f11305aaa43e0f4378f4f070022a9f2b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.26",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.5.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.6"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}