CVE-2025-39685 Vulnerability Analysis & Exploit Details

CVE-2025-39685
Vulnerability Scoring

Analysis In Progress
Analysis In Progress

Attack Complexity Details

  • Attack Complexity:
    Attack Complexity Analysis In Progress
  • Attack Vector:
    Attack Vector Under Analysis
  • Privileges Required: None
    No authentication is required for exploitation.
  • Scope:
    Impact is confined to the initially vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2025-39685 Details

Status: Received on 05 Sep 2025, 18:15 UTC

Published on: 05 Sep 2025, 18:15 UTC

CVSS Release:

CVE-2025-39685 Vulnerability Summary

CVE-2025-39685: In the Linux kernel, the following vulnerability has been resolved: comedi: pcl726: Prevent invalid irq number The reproducer passed in an irq number(0x80008000) that was too large, which triggered the oob. Added an interrupt number check to prevent users from passing in an irq number that was too large. If `it->options[1]` is 31, then `1 << it->options[1]` is still invalid because it shifts a 1-bit into the sign bit (which is UB in C). Possible solutions include reducing the upper bound on the `it->options[1]` value to 30 or lower, or using `1U << it->options[1]`. The old code would just not attempt to request the IRQ if the `options[1]` value were invalid. And it would still configure the device without interrupts even if the call to `request_irq` returned an error. So it would be better to combine this test with the test below.

Assessing the Risk of CVE-2025-39685

Access Complexity Graph

The exploitability of CVE-2025-39685 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-2025-39685

No exploitability data is available for CVE-2025-39685.

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-2025-39685, 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-2025-39685, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2025-39685 does not compromise confidentiality.
  • Integrity: None
    CVE-2025-39685 does not impact data integrity.
  • Availability: None
    CVE-2025-39685 does not affect system availability.

CVE-2025-39685 References

External References

CWE Common Weakness Enumeration

Unknown

Protect Your Infrastructure against CVE-2025-39685: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-10077 – A security vulnerability has been detected in SourceCodester Online Polling System 1.0. This impacts an unknown function of the file /registeracc.p...
  • CVE-2025-10076 – A weakness has been identified in SourceCodester Online Polling System 1.0. This affects an unknown function of the file /manage-profile.php. This ...
  • CVE-2025-10075 – A security flaw has been discovered in SourceCodester Online Polling System 1.0. The impacted element is an unknown function of the file /manage-pr...
  • CVE-2025-10074 – A vulnerability was identified in Portabilis i-Educar up to 2.10. The affected element is an unknown function of the file /usuarios/tipos/. The man...
  • CVE-2025-10073 – A vulnerability was determined in Portabilis i-Educar up to 2.10. Impacted is an unknown function of the file /module/Api/turma. Executing manipula...