CVE-2023-54062
Vulnerability Scoring
Analysis In Progress
CVE-2023-54062 Vulnerability Analysis & Exploit Details
CVE-2023-54062
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-2023-54062 Details
Status: Received on 24 Dec 2025, 13:16 UTC
Published on: 24 Dec 2025, 13:16 UTC
CVSS Release:
CVE-2023-54062 Vulnerability Summary
CVE-2023-54062: In the Linux kernel, the following vulnerability has been resolved: ext4: fix invalid free tracking in ext4_xattr_move_to_block() In ext4_xattr_move_to_block(), the value of the extended attribute which we need to move to an external block may be allocated by kvmalloc() if the value is stored in an external inode. So at the end of the function the code tried to check if this was the case by testing entry->e_value_inum. However, at this point, the pointer to the xattr entry is no longer valid, because it was removed from the original location where it had been stored. So we could end up calling kvfree() on a pointer which was not allocated by kvmalloc(); or we could also potentially leak memory by not freeing the buffer when it should be freed. Fix this by storing whether it should be freed in a separate variable.
Assessing the Risk of CVE-2023-54062
Access Complexity Graph
The exploitability of CVE-2023-54062 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-2023-54062
No exploitability data is available for CVE-2023-54062.
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-2023-54062, 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-2023-54062, 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-2023-54062 does not compromise confidentiality.
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Integrity:
None
CVE-2023-54062 does not impact data integrity.
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Availability:
None
CVE-2023-54062 does not affect system availability.
CVE-2023-54062 References
External References
- https://git.kernel.org/stable/c/1a8822343e67432b658145d2760a524c884da9d4
- https://git.kernel.org/stable/c/76887be2a96193cd11be818551b8934ecdb3123f
- https://git.kernel.org/stable/c/8beaa3cb293a8f7bacf711cf52201d59859dbc40
- https://git.kernel.org/stable/c/a18670395e5f28acddeca037c5e4bd2ea961b70a
- https://git.kernel.org/stable/c/b2fab1807d26acd1c6115b95b5eddd697d84751b
- https://git.kernel.org/stable/c/b87c7cdf2bed4928b899e1ce91ef0d147017ba45
- https://git.kernel.org/stable/c/ba04d6af5ac440a6d5a2d35dc1d8e2cb0323550a
- https://git.kernel.org/stable/c/c5fa4eedddd1c8342ce533cb401c0e693e55b4e3
- https://git.kernel.org/stable/c/f30f3391d089dc91aef91d08f4b04a6c0df2b067
CWE Common Weakness Enumeration
Unknown
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