CVE-2025-38086
Vulnerability Scoring
Analysis In Progress
CVE-2025-38086 Vulnerability Analysis & Exploit Details
CVE-2025-38086
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-2025-38086 Details
Status: Received on 28 Jun 2025, 08:15 UTC
Published on: 28 Jun 2025, 08:15 UTC
CVSS Release:
CVE-2025-38086 Vulnerability Summary
CVE-2025-38086: In the Linux kernel, the following vulnerability has been resolved: net: ch9200: fix uninitialised access during mii_nway_restart In mii_nway_restart() the code attempts to call mii->mdio_read which is ch9200_mdio_read(). ch9200_mdio_read() utilises a local buffer called "buff", which is initialised with control_read(). However "buff" is conditionally initialised inside control_read(): if (err == size) { memcpy(data, buf, size); } If the condition of "err == size" is not met, then "buff" remains uninitialised. Once this happens the uninitialised "buff" is accessed and returned during ch9200_mdio_read(): return (buff[0] | buff[1] << 8); The problem stems from the fact that ch9200_mdio_read() ignores the return value of control_read(), leading to uinit-access of "buff". To fix this we should check the return value of control_read() and return early on error.
Assessing the Risk of CVE-2025-38086
Access Complexity Graph
The exploitability of CVE-2025-38086 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-2025-38086
No exploitability data is available for CVE-2025-38086.
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-2025-38086, 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-2025-38086, 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-2025-38086 does not compromise confidentiality.
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Integrity:
None
CVE-2025-38086 does not impact data integrity.
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Availability:
None
CVE-2025-38086 does not affect system availability.
CVE-2025-38086 References
External References
- https://git.kernel.org/stable/c/119766de4930ff40db9f36b960cb53b0c400e81b
- https://git.kernel.org/stable/c/33163c68d2e3061fa3935b5f0a1867958b1cdbd2
- https://git.kernel.org/stable/c/4da7fcc098218ff92b2e83a43f545c02f714cedd
- https://git.kernel.org/stable/c/6bd2569d0b2f918e9581f744df0263caf73ee76c
- https://git.kernel.org/stable/c/9a350f30d65197354706b7759b5c89d6c267b1a9
- https://git.kernel.org/stable/c/9ad0452c0277b816a435433cca601304cfac7c21
- https://git.kernel.org/stable/c/9da3e442714f7f4393ff01c265c4959c03e88c2f
- https://git.kernel.org/stable/c/cdaa6d1cb2ff1219c6c822b27655dd170ffb0f72
CWE Common Weakness Enumeration
Unknown
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