CVE-2023-53608
Vulnerability Scoring
Analysis In Progress
CVE-2023-53608 Vulnerability Analysis & Exploit Details
CVE-2023-53608
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-2023-53608 Details
Status: Received on 04 Oct 2025, 16:15 UTC
Published on: 04 Oct 2025, 16:15 UTC
CVSS Release:
CVE-2023-53608 Vulnerability Summary
CVE-2023-53608: In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() The finalization of nilfs_segctor_thread() can race with nilfs_segctor_kill_thread() which terminates that thread, potentially causing a use-after-free BUG as KASAN detected. At the end of nilfs_segctor_thread(), it assigns NULL to "sc_task" member of "struct nilfs_sc_info" to indicate the thread has finished, and then notifies nilfs_segctor_kill_thread() of this using waitqueue "sc_wait_task" on the struct nilfs_sc_info. However, here, immediately after the NULL assignment to "sc_task", it is possible that nilfs_segctor_kill_thread() will detect it and return to continue the deallocation, freeing the nilfs_sc_info structure before the thread does the notification. This fixes the issue by protecting the NULL assignment to "sc_task" and its notification, with spinlock "sc_state_lock" of the struct nilfs_sc_info. Since nilfs_segctor_kill_thread() does a final check to see if "sc_task" is NULL with "sc_state_lock" locked, this can eliminate the race.
Assessing the Risk of CVE-2023-53608
Access Complexity Graph
The exploitability of CVE-2023-53608 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-2023-53608
No exploitability data is available for CVE-2023-53608.
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-2023-53608, 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-2023-53608, 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-2023-53608 does not compromise confidentiality.
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Integrity:
None
CVE-2023-53608 does not impact data integrity.
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Availability:
None
CVE-2023-53608 does not affect system availability.
CVE-2023-53608 References
External References
- https://git.kernel.org/stable/c/034cce77d52ba013ce62b4f5258c29907eb1ada5
- https://git.kernel.org/stable/c/0dbf0e64b91ee8fcb278aea93eb06fc7d56ecbcc
- https://git.kernel.org/stable/c/613bf23c070d11c525268f2945aa594704a9b764
- https://git.kernel.org/stable/c/6be49d100c22ffea3287a4b19d7639d259888e33
- https://git.kernel.org/stable/c/92684e02654c91a61a0b0561433b710bcece19fe
- https://git.kernel.org/stable/c/b4d80bd6370b81a1725b6b8f7894802c23a14e9f
- https://git.kernel.org/stable/c/bae009a2f1b7c2011d2e92d8c84868d315c0b97e
- https://git.kernel.org/stable/c/f32297dba338dc06d62286dedb3cdbd5175b1719
CWE Common Weakness Enumeration
Unknown
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