{
  "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-2025-71161",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-71161",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2026-01-23T15:23:59.464Z",
    "updatedAt": "2026-10-19T18:15:16.401Z",
    "importedAt": "2026-10-24T01:57:44.935Z",
    "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": "dm-verity: disable recursive forward error correction",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-verity: disable recursive forward error correction\n\nThere are two problems with the recursive correction:\n\n1. It may cause denial-of-service. In fec_read_bufs, there is a loop that\nhas 253 iterations. For each iteration, we may call verity_hash_for_block\nrecursively. There is a limit of 4 nested recursions - that means that\nthere may be at most 253^4 (4 billion) iterations. Red Hat QE team\nactually created an image that pushes dm-verity to this limit - and this\nimage just makes the udev-worker process get stuck in the 'D' state.\n\n2. It doesn't work. In fec_read_bufs we store data into the variable\n\"fio->bufs\", but fio bufs is shared between recursive invocations, if\n\"verity_hash_for_block\" invoked correction recursively, it would\noverwrite partially filled fio->bufs.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a739ff3f543afbb4a041c16cd0182c8e8d366e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8b821ca892cfeeaf0bedc9fc72717294f67144d5"
            },
            {
              "version": "a739ff3f543afbb4a041c16cd0182c8e8d366e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e227d2b229c7529bd98d348efc55262ccf24ab35"
            },
            {
              "version": "a739ff3f543afbb4a041c16cd0182c8e8d366e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "897d9006e75f46f8bd7df78faa424327ae6a4bcf"
            },
            {
              "version": "a739ff3f543afbb4a041c16cd0182c8e8d366e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4220cb37406915c926c0e4a3dbab77cd9cceeb1e"
            },
            {
              "version": "a739ff3f543afbb4a041c16cd0182c8e8d366e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "232948cf600fba69aff36b25d85ef91a73a35756"
            },
            {
              "version": "a739ff3f543afbb4a041c16cd0182c8e8d366e70",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d9f3e47d3fae0c101d9094bc956ed24e7a0ee801"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.5"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.167",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.130",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.78",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}