{
  "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-2026-74566",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74566",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T12:28:07.628Z",
    "updatedAt": "2026-08-19T16:39:06.890Z",
    "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": "keys: make keyring key-chunk byte order agree with keyring_diff_objects()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: make keyring key-chunk byte order agree with keyring_diff_objects()\n\nkeyring_get_key_chunk() loads description bytes into the index chunk low\naddress first, while keyring_diff_objects() numbers the first differing\nbit from the low end and folds the absolute byte index into the level\nwithout removing the inline-prefix offset the level already carries.\nThe two disagree on byte order and bit position, so the array can be\ntold two keys first differ at a bit that does not differ in the chunk\nthe walker uses, letting crafted descriptions collide into one node.\n\nLoad the chunk in the order keyring_diff_objects() assumes and drop the\ninline-prefix length when folding the byte index into the level.  This\nonly changes the in-memory ordering used to place keys within a keyring;\nadd, search and read of non-colliding keys are unaffected.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "414bcf37d81ce9b3823aabc06b04c97fdcbe489b"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "abe43c661efb753d5ee35ad8ace4bbb16fa9afd0"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f81920917074e3c4ad4fba06fe8c56738d010606"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bd0f976ef89dce6db458bf75bc2cf51127becc41"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7269df3e7fcfa308e6a456305162f7788747bdbd"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3d9f16c0b643ceac305526b2e2fe25c2c6166926"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e5397a3fed0dee7779bd084bec3c0584db3c930"
            },
            {
              "version": "f771fde82051976a6fc0fd570f8b86de4a92124b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "58565eef0f8d861aae92abfb7658458d661cee17"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.3"
            },
            {
              "version": "5.10.265",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.216",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.183",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.151",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.44",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}