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Vulnerability DatabaseCVE-2025-39772
CVE-2025-39772:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2025-39772 is a vulnerability in the Linux kernel affecting the drm/hisilicon/hibmc driver. The issue was disclosed on September 11, 2025, and involves a NULL pointer dereference that occurs when the hibmc driver fails to load. The vulnerability specifically affects the resource cleanup process in the hibmc_unload function (NVD).
Technical details
The vulnerability occurs in the hibmc driver's resource cleanup process. When the hibmc driver fails to load, it attempts to use hibmcunload to free resources. However, the mutexes in mode.config are not initialized, which leads to a NULL pointer dereference. The technical fix involves changing a goto statement to a return statement, as the hibnchw_init() function doesn't require freeing any resources (NVD).
Impact
The vulnerability can result in a NULL pointer dereference, which typically causes a process failure unless exception handling is available on the platform (Red Hat).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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