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Vulnerability DatabaseCVE-2025-38654
CVE-2025-38654:
Linux Ubuntu vulnerability analysis and mitigation
Overview
In the Linux kernel, a vulnerability (CVE-2025-38654) was discovered related to the pinctrl subsystem, specifically in the Canaan K230 driver. The vulnerability was disclosed on August 22, 2025, and affects the Linux kernel's pin control functionality (NVD, Ubuntu).
Technical details
The vulnerability stems from an incorrect ordering of device tree parsing and pinctrl registration in the Canaan K230 driver. Specifically, the device tree parsing was performed after calling devmpinctrlregister(), which could lead to the use of uninitialized pin resources (NVD).
Impact
The improper initialization sequence could potentially lead to system instability or undefined behavior due to the use of uninitialized pin resources in the Linux kernel's pin control subsystem (NVD).
Mitigation and workarounds
The vulnerability has been resolved by moving the device tree parsing before the pinctrl register call. This fix ensures proper initialization of pin resources before they are registered with the system. The patch has been integrated into the Linux kernel codebase (NVD, Ubuntu).
Additional resources
Source: This report was generated using AI
Related Linux Ubuntu vulnerabilities:
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