{
  "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-2026-74365",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74365",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:58:47.594Z",
    "updatedAt": "2026-10-16T18:55:35.765Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "nvdimm/btt: Handle preemption in BTT lane acquisition",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/btt: Handle preemption in BTT lane acquisition\n\nBTT lanes serialize access to per-lane metadata and workspace state\nduring BTT I/O. The btt-check unit test reports data mismatches during\nBTT writes due to a race in lane acquisition that can lead to silent\ndata corruption.\n\nThe existing lane model uses a spinlock together with a per-CPU\nrecursion count. That recursion model stopped being valid after BTT\nlanes became preemptible: another task can run on the same CPU,\nobserve a non-zero recursion count, bypass locking, and use the same\nlane concurrently.\n\nBTT lanes are also held across arena_write_bytes() calls. That path\nreaches nsio_rw_bytes(), which flushes writes with nvdimm_flush().\nSome provider flush callbacks can sleep, making a spinlock the wrong\nprimitive for the lane lifetime.\n\nReplace the spinlock-based recursion model with a dynamically\nallocated per-lane mutex array and take the lane lock\nunconditionally.\n\nAdd might_sleep() to catch any future atomic-context caller.\n\nFound with the ndctl unit test btt-check.sh.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f23859748e3d530217b197e146a9ac84faf0a282",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fd7a97b2514cfc4b4cc067a27dd39bde2a8b1735"
            },
            {
              "version": "6f50b414f1a0d790f11a6438a3ad6d0577eb2c18",
              "status": "affected",
              "versionType": "git",
              "lessThan": "73e35c1bdfa160b41fdbe204e02325f0687de506"
            },
            {
              "version": "36c75ce3bd299878fd9b238e9803d3817ddafbf3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "417918783bcfe0be135019df16a267b3af442efd"
            },
            {
              "version": "36c75ce3bd299878fd9b238e9803d3817ddafbf3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5c53406098b599c420b031e6ec5ba8a2f3794c50"
            },
            {
              "version": "36c75ce3bd299878fd9b238e9803d3817ddafbf3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4eafa810b042d985ec6bbf5b514414e73cee6f6f"
            },
            {
              "version": "36c75ce3bd299878fd9b238e9803d3817ddafbf3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8d4b989d9c9afe5f185aa5853b666fc4617afe9e"
            },
            {
              "version": "2577fece583c7c05cda7ad50dde7638c962665e1",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "40ba3fa21250e361bdd8f00800b3e2cb6160de95",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "b0e7a935739f33ed2bd6868b89f97dd4c2683c26",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "66eb7b7f23dd9aec5356e7054dd3596ae7648ff5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "b27751fb1f271bbb78d5993c0b10011628e40e18",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.1.63",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.178"
            },
            {
              "version": "6.6.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.145"
            },
            {
              "version": "4.19.299",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.4.261",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.10.201",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.11"
            },
            {
              "version": "5.15.139",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.16"
            },
            {
              "version": "6.5.12",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.7"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}