Linux Kernel Vulnerability in Tegra I2C Mutex Lock Implementation

CVE-2026-64171

What is CVE-2026-64171?

A vulnerability exists in the Linux kernel affecting the Tegra I2C driver, where a failure in the mutex lock leads to a runtime power management reference leak. Specifically, if the function tegra_i2c_mutex_lock() fails, it exits without invoking pm_runtime_put(), thus preventing the associated device from entering runtime suspend. This issue is critical for maintaining efficient power management and system performance. A fix has been implemented to ensure that pm_runtime_put() is correctly called before the function returns on lock failure, thereby mitigating the leak and potential performance concerns.

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