CVE-2025-39920
Vulnerability Scoring
Analysis In Progress
CVE-2025-39920 Vulnerability Analysis & Exploit Details
CVE-2025-39920
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-2025-39920 Details
Status: Received on 01 Oct 2025, 08:15 UTC
Published on: 01 Oct 2025, 08:15 UTC
CVSS Release:
CVE-2025-39920 Vulnerability Summary
CVE-2025-39920: In the Linux kernel, the following vulnerability has been resolved: pcmcia: Add error handling for add_interval() in do_validate_mem() In the do_validate_mem(), the call to add_interval() does not handle errors. If kmalloc() fails in add_interval(), it could result in a null pointer being inserted into the linked list, leading to illegal memory access when sub_interval() is called next. This patch adds an error handling for the add_interval(). If add_interval() returns an error, the function will return early with the error code.
Assessing the Risk of CVE-2025-39920
Access Complexity Graph
The exploitability of CVE-2025-39920 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-2025-39920
No exploitability data is available for CVE-2025-39920.
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-2025-39920, 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-2025-39920, 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-2025-39920 does not compromise confidentiality.
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Integrity:
None
CVE-2025-39920 does not impact data integrity.
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Availability:
None
CVE-2025-39920 does not affect system availability.
CVE-2025-39920 References
External References
- https://git.kernel.org/stable/c/06b26e3099207c94b3d1be8565aedc6edc4f0a60
- https://git.kernel.org/stable/c/289b58f8ff3198d091074a751d6b8f6827726f3e
- https://git.kernel.org/stable/c/369bf6e241506583f4ee7593c53b92e5a9f271b4
- https://git.kernel.org/stable/c/4a81f78caa53e0633cf311ca1526377d9bff7479
- https://git.kernel.org/stable/c/5b60ed401b47897352c520bc724c85aa908dedcc
- https://git.kernel.org/stable/c/85be7ef8c8e792a414940a38d94565dd48d2f236
- https://git.kernel.org/stable/c/8699358b6ac99b8ccc97ed9e6e3669ef8958ef7b
- https://git.kernel.org/stable/c/ae184024ef31423e5beb44cf4f52999bbcf2fe5b
CWE Common Weakness Enumeration
Unknown
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