CVE-2023-54140
Vulnerability Scoring
Analysis In Progress
CVE-2023-54140 Vulnerability Analysis & Exploit Details
CVE-2023-54140
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2023-54140 Details
Status: Received on 24 Dec 2025, 13:16 UTC
Published on: 24 Dec 2025, 13:16 UTC
CVSS Release:
CVE-2023-54140 Vulnerability Summary
CVE-2023-54140: In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse A syzbot stress test using a corrupted disk image reported that mark_buffer_dirty() called from __nilfs_mark_inode_dirty() or nilfs_palloc_commit_alloc_entry() may output a kernel warning, and can panic if the kernel is booted with panic_on_warn. This is because nilfs2 keeps buffer pointers in local structures for some metadata and reuses them, but such buffers may be forcibly discarded by nilfs_clear_dirty_page() in some critical situations. This issue is reported to appear after commit 28a65b49eb53 ("nilfs2: do not write dirty data after degenerating to read-only"), but the issue has potentially existed before. Fix this issue by checking the uptodate flag when attempting to reuse an internally held buffer, and reloading the metadata instead of reusing the buffer if the flag was lost.
Assessing the Risk of CVE-2023-54140
Access Complexity Graph
The exploitability of CVE-2023-54140 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2023-54140
No exploitability data is available for CVE-2023-54140.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2023-54140, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2023-54140, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2023-54140 does not compromise confidentiality.
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Integrity:
None
CVE-2023-54140 does not impact data integrity.
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Availability:
None
CVE-2023-54140 does not affect system availability.
CVE-2023-54140 References
External References
- https://git.kernel.org/stable/c/46c11be2dca295742a5508ea910a77f7733fb7f4
- https://git.kernel.org/stable/c/473795610594f261e98920f0945550314df36f07
- https://git.kernel.org/stable/c/4da07e958bfda2d69d83db105780e8916e3ac02e
- https://git.kernel.org/stable/c/99a73016a5e12a09586a96f998e91f9ea145cd00
- https://git.kernel.org/stable/c/b308b3eabc429649b5501d36290cea403fbd746c
- https://git.kernel.org/stable/c/b911bef132a06de01a745c6a24172d6db7216333
- https://git.kernel.org/stable/c/cdaac8e7e5a059f9b5e816cda257f08d0abffacd
- https://git.kernel.org/stable/c/d95e403588738c7ec38f52b9f490b15e7745d393
- https://git.kernel.org/stable/c/f1d637b63d8a27ac3386f186a694907f2717fc13
CWE Common Weakness Enumeration
Unknown
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