CVE-2025-38535
Vulnerability Scoring
Analysis In Progress
CVE-2025-38535 Vulnerability Analysis & Exploit Details
CVE-2025-38535
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-2025-38535 Details
Status: Awaiting Analysis
Last updated: 🕒 28 Aug 2025, 15:15 UTC
Originally published on: 🕛 16 Aug 2025, 12:15 UTC
Time between publication and last update: 12 days
CVSS Release:
CVE-2025-38535 Vulnerability Summary
CVE-2025-38535: In the Linux kernel, the following vulnerability has been resolved: phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode When transitioning from USB_ROLE_DEVICE to USB_ROLE_NONE, the code assumed that the regulator should be disabled. However, if the regulator is marked as always-on, regulator_is_enabled() continues to return true, leading to an incorrect attempt to disable a regulator which is not enabled. This can result in warnings such as: [ 250.155624] WARNING: CPU: 1 PID: 7326 at drivers/regulator/core.c:3004 _regulator_disable+0xe4/0x1a0 [ 250.155652] unbalanced disables for VIN_SYS_5V0 To fix this, we move the regulator control logic into tegra186_xusb_padctl_id_override() function since it's directly related to the ID override state. The regulator is now only disabled when the role transitions from USB_ROLE_HOST to USB_ROLE_NONE, by checking the VBUS_ID register. This ensures that regulator enable/disable operations are properly balanced and only occur when actually transitioning to/from host mode.
Assessing the Risk of CVE-2025-38535
Access Complexity Graph
The exploitability of CVE-2025-38535 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-2025-38535
No exploitability data is available for CVE-2025-38535.
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-2025-38535, 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-2025-38535, 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-2025-38535 does not compromise confidentiality.
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Integrity:
None
CVE-2025-38535 does not impact data integrity.
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Availability:
None
CVE-2025-38535 does not affect system availability.
CVE-2025-38535 References
External References
- https://git.kernel.org/stable/c/1bb85b5c2bd43b687c3d54eb6328917f90dd38fc
- https://git.kernel.org/stable/c/5367cdeb75cb6c687ca468450bceb2602ab239d8
- https://git.kernel.org/stable/c/cdcb0ffd6448f6be898956913a42bd08e59fb2ae
- https://git.kernel.org/stable/c/ceb645ac6ce052609ee5c8f819a80e8881789b04
- https://git.kernel.org/stable/c/cefc1caee9dd06c69e2d807edc5949b329f52b22
- https://git.kernel.org/stable/c/eaa420339658615d26c1cc95cd6cf720b9aebfca
- https://git.kernel.org/stable/c/ec7f98ff05f0649af0adeb4808c7ba23d6111ef9
CWE Common Weakness Enumeration
Unknown
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