{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53526","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-01T11:39:39.407Z","datePublished":"2025-10-01T11:46:11.862Z","dateUpdated":"2026-05-11T19:46:40.839Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:46:40.839Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jbd2/checkpoint.c"],"versions":[{"version":"b832174b7f89df3ebab02f5b485d00127a0e1a6e","lessThan":"ef5fea70e5915afd64182d155e72bfb4f275e1fc","status":"affected","versionType":"git"},{"version":"e5c768d809a85e9efd0274b2efe69d4970cc0014","lessThan":"dbafe636db415299e54d9dfefc1003bda9e71c9d","status":"affected","versionType":"git"},{"version":"46f881b5b1758dc4a35fba4a643c10717d0cf427","lessThan":"2298f2589903a8bc03061b54b31fd97985ab6529","status":"affected","versionType":"git"},{"version":"46f881b5b1758dc4a35fba4a643c10717d0cf427","lessThan":"590a809ff743e7bd890ba5fb36bc38e20a36de53","status":"affected","versionType":"git"},{"version":"019b59aeb2af6b47d5c8e69c5dc1d731c8df0354","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jbd2/checkpoint.c"],"versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"5.15.132","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.54","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.5.4","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.129","versionEndExcluding":"5.15.132"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.50","versionEndExcluding":"6.1.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.5.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.13"}]}]}],"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"}}}}