CVE-2023-53526 (GCVE-0-2023-53526)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:46 – Updated: 2026-05-11 19:46
VLAI?
Title
jbd2: check 'jh->b_transaction' before removing it from checkpoint
Summary
In the Linux kernel, the following vulnerability has been resolved: jbd2: check 'jh->b_transaction' before removing it from checkpoint Following process will corrupt ext4 image: Step 1: jbd2_journal_commit_transaction __jbd2_journal_insert_checkpoint(jh, commit_transaction) // Put jh into trans1->t_checkpoint_list journal->j_checkpoint_transactions = commit_transaction // Put trans1 into journal->j_checkpoint_transactions Step 2: do_get_write_access test_clear_buffer_dirty(bh) // clear buffer dirty，set jbd dirty __jbd2_journal_file_buffer(jh, transaction) // jh belongs to trans2 Step 3: drop_cache journal_shrink_one_cp_list jbd2_journal_try_remove_checkpoint if (!trylock_buffer(bh)) // lock bh, true if (buffer_dirty(bh)) // buffer is not dirty __jbd2_journal_remove_checkpoint(jh) // remove jh from trans1->t_checkpoint_list Step 4: jbd2_log_do_checkpoint trans1 = journal->j_checkpoint_transactions // jh is not in trans1->t_checkpoint_list jbd2_cleanup_journal_tail(journal) // trans1 is done Step 5: Power cut, trans2 is not committed, jh is lost in next mounting. Fix it by checking 'jh->b_transaction' before remove it from checkpoint.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b832174b7f89df3ebab02f5b485d00127a0e1a6e , < ef5fea70e5915afd64182d155e72bfb4f275e1fc (git)
Affected: e5c768d809a85e9efd0274b2efe69d4970cc0014 , < dbafe636db415299e54d9dfefc1003bda9e71c9d (git)
Affected: 46f881b5b1758dc4a35fba4a643c10717d0cf427 , < 2298f2589903a8bc03061b54b31fd97985ab6529 (git)
Affected: 46f881b5b1758dc4a35fba4a643c10717d0cf427 , < 590a809ff743e7bd890ba5fb36bc38e20a36de53 (git)
Affected: 019b59aeb2af6b47d5c8e69c5dc1d731c8df0354 (git)
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Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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