{
  "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-2025-68771",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-68771",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2026-01-13T15:28:49.272Z",
    "updatedAt": "2026-05-11T21:53:02.168Z",
    "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": "ocfs2: fix kernel BUG in ocfs2_find_victim_chain",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix kernel BUG in ocfs2_find_victim_chain\n\nsyzbot reported a kernel BUG in ocfs2_find_victim_chain() because the\n`cl_next_free_rec` field of the allocation chain list (next free slot in\nthe chain list) is 0, triggring the BUG_ON(!cl->cl_next_free_rec)\ncondition in ocfs2_find_victim_chain() and panicking the kernel.\n\nTo fix this, an if condition is introduced in ocfs2_claim_suballoc_bits(),\njust before calling ocfs2_find_victim_chain(), the code block in it being\nexecuted when either of the following conditions is true:\n\n1. `cl_next_free_rec` is equal to 0, indicating that there are no free\nchains in the allocation chain list\n2. `cl_next_free_rec` is greater than `cl_count` (the total number of\nchains in the allocation chain list)\n\nEither of them being true is indicative of the fact that there are no\nchains left for usage.\n\nThis is addressed using ocfs2_error(), which prints\nthe error log for debugging purposes, rather than panicking the kernel.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f77e5cd563e6387fdf3bb714fcda36cd88ac5e7"
            },
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d0fd1f732ea8063cecd07a3879b7d815c7ee71ed"
            },
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b08a33d5f80efe6979a6e8f905c1a898910c21dd"
            },
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "96f1b074c98c20f55a3b23d2ab44d9fb0f619869"
            },
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e24aedae71652d4119049f1fbef6532ccbe3966d"
            },
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7acc0390e0dd7474c4451d05465a677d55ad4268"
            },
            {
              "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "039bef30e320827bac8990c9f29d2a68cd8adb5f"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.16"
            },
            {
              "version": "5.10.248",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.198",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.120",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.64",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}