Linux Kernel Vulnerability in PCA9450 I2C Module by Linux Foundation

CVE-2025-39771

What is CVE-2025-39771?

A vulnerability within the Linux kernel associated with the PCA9450 I2C module has been identified, leading to improper notifier callback registration. This issue, characterized by the message 'notifier callback pca9450_i2c_restart_handler already registered', can precipitate kernel panic and resource mismanagement. To mitigate this, the utilization of devm_register_sys_off_handler is recommended, enabling the kernel to efficiently manage resource deallocation and preventing potential error dumps.

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