{
  "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-2026-90279",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-90279",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:08:10.654Z",
    "updatedAt": "2026-10-19T09:00:57.773Z",
    "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": "md/raid5: round bitmap stripes with sector division",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: round bitmap stripes with sector division\n\nraid5_bitmap_sector_map() aligns the array range to full RAID5 stripe\nwidths before converting it to component sectors. That width is\nchunk_sectors multiplied by the number of data disks, and it is not\nalways a power of two.\n\nReproduce with a 4-disk RAID5, 1024-sector chunks, and three data disks.\nThe full-stripe width is 3072 sectors. For a one-sector write at array\nsector 3072, correct rounding gives array range [3072, 6144), which maps\nto component range [1024, 2048). The old round_down()/round_up() logic\ninstead gives [1024, 4096), which maps to [0, 1024).\n\nUse sector_div() based arithmetic so the rounded range is aligned to the\nactual RAID5 stripe width.\n\nThe deterministic mapper test now reports the fixed component range as\n[1024, 2048), while the old mask-based range was [0, 1024).",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b29e6400be51c214a0ad30dce937348b57abe33a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9d7490007707f90691911385365bd1d691d99225"
            },
            {
              "version": "aa8e15d69f5c0044d5bff61844e163aacc4ac172",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cab7d949b18b2f1cd625689dc16c5f81236bac93"
            },
            {
              "version": "9c89f604476cf15c31fbbdb043cff7fbf1dbe0cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "02c10581866d08822c6348e299881485fc546185"
            },
            {
              "version": "9c89f604476cf15c31fbbdb043cff7fbf1dbe0cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ccbdc483eb041eef809e9ff223d1ad63518a2c52"
            },
            {
              "version": "9c89f604476cf15c31fbbdb043cff7fbf1dbe0cb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "17ea021ae74987d6064c8195c4922fa025753892"
            },
            {
              "version": "a41a0df5d7638acf15e723ad985980b4f7ff9383",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.6.79",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.157"
            },
            {
              "version": "6.12.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.110"
            },
            {
              "version": "6.13.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.14"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.14"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}