{
  "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-2023-53526",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53526",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T11:46:11.862Z",
    "updatedAt": "2026-10-15T21:41:30.040Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "jbd2: check 'jh->b_transaction' before removing it from checkpoint",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: check 'jh->b_transaction' before removing it from checkpoint\n\nFollowing process will corrupt ext4 image:\nStep 1:\njbd2_journal_commit_transaction\n __jbd2_journal_insert_checkpoint(jh, commit_transaction)\n // Put jh into trans1->t_checkpoint_list\n journal->j_checkpoint_transactions = commit_transaction\n // Put trans1 into journal->j_checkpoint_transactions\n\nStep 2:\ndo_get_write_access\n test_clear_buffer_dirty(bh) // clear buffer dirty，set jbd dirty\n __jbd2_journal_file_buffer(jh, transaction) // jh belongs to trans2\n\nStep 3:\ndrop_cache\n journal_shrink_one_cp_list\n  jbd2_journal_try_remove_checkpoint\n   if (!trylock_buffer(bh))  // lock bh, true\n   if (buffer_dirty(bh))     // buffer is not dirty\n   __jbd2_journal_remove_checkpoint(jh)\n   // remove jh from trans1->t_checkpoint_list\n\nStep 4:\njbd2_log_do_checkpoint\n trans1 = journal->j_checkpoint_transactions\n // jh is not in trans1->t_checkpoint_list\n jbd2_cleanup_journal_tail(journal)  // trans1 is done\n\nStep 5: Power cut, trans2 is not committed, jh is lost in next mounting.\n\nFix it by checking 'jh->b_transaction' before remove it from checkpoint.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b832174b7f89df3ebab02f5b485d00127a0e1a6e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ef5fea70e5915afd64182d155e72bfb4f275e1fc"
            },
            {
              "version": "e5c768d809a85e9efd0274b2efe69d4970cc0014",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dbafe636db415299e54d9dfefc1003bda9e71c9d"
            },
            {
              "version": "46f881b5b1758dc4a35fba4a643c10717d0cf427",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2298f2589903a8bc03061b54b31fd97985ab6529"
            },
            {
              "version": "46f881b5b1758dc4a35fba4a643c10717d0cf427",
              "status": "affected",
              "versionType": "git",
              "lessThan": "590a809ff743e7bd890ba5fb36bc38e20a36de53"
            },
            {
              "version": "019b59aeb2af6b47d5c8e69c5dc1d731c8df0354",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.129",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.132"
            },
            {
              "version": "6.1.50",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.54"
            },
            {
              "version": "6.4.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.5"
            },
            {
              "version": "5.15.132",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.5.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}