{
  "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-2026-74671",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74671",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-22T15:32:41.480Z",
    "updatedAt": "2026-08-22T15:32:41.480Z",
    "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": "ima: fix out-of-bounds read in xattr_verify()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: fix out-of-bounds read in xattr_verify()\n\nThe digest-length check in xattr_verify() mixes int and size_t:\n\n\tif (xattr_len - sizeof(xattr_value->type) - hash_start >=\n\t\t\tiint->ima_hash->length)\n\nsizeof() yields size_t, so the usual arithmetic conversions promote\nthe whole left-hand side to unsigned 64-bit before the subtraction\nruns. For a truncated xattr this underflows instead of going negative:\na 1-byte IMA_XATTR_DIGEST_NG xattr (xattr_len == 1, hash_start == 1)\nturns \"1 - 1 - 1\" into SIZE_MAX, which is trivially >= ima_hash->length.\nThe check then passes and the following memcmp() reads\niint->ima_hash->length bytes starting past the end of the buffer\nvfs_getxattr_alloc() allocated for it.\n\nNothing upstream clamps xattr_len back into a safe range first:\nima_get_hash_algo() only special-cases xattr_len < 2 to pick a default\nalgorithm, and evm_verifyxattr() returns INTEGRITY_UNKNOWN rather than\nfailing when no HMAC key is loaded, so a truncated security.ima value\nreaches the length check as-is.\n\nRewrite the comparison so every operand stays a signed int and no\nimplicit conversion to size_t can occur.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d823b5f4557083d1dd92096f796a78a2b1b06d10"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "caeb105c15ea2431fa8da7ecfa242d0c68272426"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a784b4732ac7e51862b9b210c2d8b2ab9e83568c"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b6cb134707a2127d90a58d69dd818679cae8033c"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e515b6c9aab452a4f0734bd7208e4e780e164ca"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "27f3924061592d0ef6b04e16f48754b6cb6adf27"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dd04114af0d451091f7b8cbd26d9e37d011e9131"
            },
            {
              "version": "3ea7a56067e663278470c04fd655adf809e72d4d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5ff232d31106f45ac87c3b64e1d35a0667777797"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.13"
            },
            {
              "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": "6.6.152",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.104",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.45",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}