{"api_version":"1","generated_at":"2026-07-23T14:33:00+00:00","cve":"CVE-2023-53526","urls":{"html":"https://cve.report/CVE-2023-53526","api":"https://cve.report/api/cve/CVE-2023-53526.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-53526","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-53526"},"summary":{"title":"jbd2: check 'jh->b_transaction' before removing it from checkpoint","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-10-01 12:15:57","updated_at":"2026-04-06 13:27:15"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/2298f2589903a8bc03061b54b31fd97985ab6529","name":"https://git.kernel.org/stable/c/2298f2589903a8bc03061b54b31fd97985ab6529","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/590a809ff743e7bd890ba5fb36bc38e20a36de53","name":"https://git.kernel.org/stable/c/590a809ff743e7bd890ba5fb36bc38e20a36de53","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ef5fea70e5915afd64182d155e72bfb4f275e1fc","name":"https://git.kernel.org/stable/c/ef5fea70e5915afd64182d155e72bfb4f275e1fc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dbafe636db415299e54d9dfefc1003bda9e71c9d","name":"https://git.kernel.org/stable/c/dbafe636db415299e54d9dfefc1003bda9e71c9d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-53526","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53526","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b832174b7f89df3ebab02f5b485d00127a0e1a6e ef5fea70e5915afd64182d155e72bfb4f275e1fc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e5c768d809a85e9efd0274b2efe69d4970cc0014 dbafe636db415299e54d9dfefc1003bda9e71c9d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46f881b5b1758dc4a35fba4a643c10717d0cf427 2298f2589903a8bc03061b54b31fd97985ab6529 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 46f881b5b1758dc4a35fba4a643c10717d0cf427 590a809ff743e7bd890ba5fb36bc38e20a36de53 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 019b59aeb2af6b47d5c8e69c5dc1d731c8df0354 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.132 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.54 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.5.4 6.5.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"53526","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/jbd2/checkpoint.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ef5fea70e5915afd64182d155e72bfb4f275e1fc","status":"affected","version":"b832174b7f89df3ebab02f5b485d00127a0e1a6e","versionType":"git"},{"lessThan":"dbafe636db415299e54d9dfefc1003bda9e71c9d","status":"affected","version":"e5c768d809a85e9efd0274b2efe69d4970cc0014","versionType":"git"},{"lessThan":"2298f2589903a8bc03061b54b31fd97985ab6529","status":"affected","version":"46f881b5b1758dc4a35fba4a643c10717d0cf427","versionType":"git"},{"lessThan":"590a809ff743e7bd890ba5fb36bc38e20a36de53","status":"affected","version":"46f881b5b1758dc4a35fba4a643c10717d0cf427","versionType":"git"},{"status":"affected","version":"019b59aeb2af6b47d5c8e69c5dc1d731c8df0354","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/jbd2/checkpoint.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.5"},{"lessThan":"6.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.132","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.54","versionType":"semver"},{"lessThanOrEqual":"6.5.*","status":"unaffected","version":"6.5.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.6","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.132","versionStartIncluding":"5.15.129","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.54","versionStartIncluding":"6.1.50","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.5.4","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2025-10-01T11:46:11.862Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ef5fea70e5915afd64182d155e72bfb4f275e1fc"},{"url":"https://git.kernel.org/stable/c/dbafe636db415299e54d9dfefc1003bda9e71c9d"},{"url":"https://git.kernel.org/stable/c/2298f2589903a8bc03061b54b31fd97985ab6529"},{"url":"https://git.kernel.org/stable/c/590a809ff743e7bd890ba5fb36bc38e20a36de53"}],"title":"jbd2: check 'jh->b_transaction' before removing it from checkpoint","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-53526","datePublished":"2025-10-01T11:46:11.862Z","dateReserved":"2025-10-01T11:39:39.407Z","dateUpdated":"2025-10-01T11:46:11.862Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2025-10-01 12:15:57","lastModifiedDate":"2026-04-06 13:27:15","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.129","versionEndExcluding":"5.15.132","matchCriteriaId":"C48E6B18-69FC-487C-99B6-6FE6364CE6FF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.50","versionEndExcluding":"6.1.54","matchCriteriaId":"B0B2EC17-AAD2-4B53-8D36-E8446726A2B0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.13","versionEndExcluding":"6.5","matchCriteriaId":"B17E134C-96DA-49BA-A4B8-933F5D9C25A2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5.1","versionEndExcluding":"6.5.4","matchCriteriaId":"6F0E010F-32B3-4C0E-AB36-F808FAEBE852"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.5:-:*:*:*:*:*:*","matchCriteriaId":"A2D9420A-9BF4-4C16-B6DA-8A1D279F7384"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.5:rc3:*:*:*:*:*:*","matchCriteriaId":"F5608371-157A-4318-8A2E-4104C3467EA1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.5:rc4:*:*:*:*:*:*","matchCriteriaId":"2226A776-DF8C-49E0-A030-0A7853BB018A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.5:rc5:*:*:*:*:*:*","matchCriteriaId":"6F15C659-DF06-455A-9765-0E6DE920F29A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.5:rc6:*:*:*:*:*:*","matchCriteriaId":"5B1C14ED-ABC4-41D3-8D9C-D38C6A65B4DE"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.5:rc7:*:*:*:*:*:*","matchCriteriaId":"F187F8CD-249A-4AF1-877B-08E8C24A1A10"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"53526","Ordinal":"1","Title":"jbd2: check 'jh->b_transaction' before removing it from checkpoi","CVE":"CVE-2023-53526","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"53526","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"jbd2: check 'jh->b_transaction' before removing it from checkpoi"}]}}}