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CVE-2023-53526— jbd2: check 'jh->b_transaction' before removing it from checkpoint

EPSS 0.02% · P5
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I. Basic Information for CVE-2023-53526

Vulnerability Information
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Vulnerability Title
jbd2: check 'jh->b_transaction' before removing it from checkpoint
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未检查jh-b_transaction即从检查点移除，可能导致文件系统损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux b832174b7f89df3ebab02f5b485d00127a0e1a6e ~ ef5fea70e5915afd64182d155e72bfb4f275e1fc -
LinuxLinux 6.5 -

II. Public POCs for CVE-2023-53526

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III. Intelligence Information for CVE-2023-53526

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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

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CVE-2022-50457mtd: core: Fix refcount error in del_mtd_device()
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CVE-2022-50459scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()
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CVE-2022-50469staging: rtl8723bs: fix potential memory leak in rtw_init_drv_sw()
CVE-2022-50468platform/chrome: cros_usbpd_notify: Fix error handling in cros_usbpd_notify_init()
CVE-2022-50467scsi: lpfc: Fix null ndlp ptr dereference in abnormal exit path for GFT_ID
CVE-2022-50464mt76: mt7915: Fix PCI device refcount leak in mt7915_pci_init_hif2()
CVE-2022-50462MIPS: vpe-mt: fix possible memory leak while module exiting
CVE-2022-50463powerpc/52xx: Fix a resource leak in an error handling path
CVE-2022-50449clk: samsung: Fix memory leak in _samsung_clk_register_pll()

Showing top 20 of 169 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53526

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