CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's PCA953x GPIO driver, where improper locking in the regmap configuration can lead to race conditions during register read/write operations. This flaw may result in incorrect data being processed, potentially compromising system stability and functionality. Linux system administrators and developers utilizing the PCA953x driver should prioritize addressing this issue to ensure reliable operation and avoid potential system errors.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: gpio: pca953x: fix pca953x_irq_bus_sync_unlock regmap lock Locking is disabled in the regmap config as this driver uses its own lock. This means that all calls to regmap functions (read or write) must hold the i2c_lock. The function pca953x_irq_bus_sync_unlock() did not do this, and it was therefore possible that multiple threads could cause an incorrect register to be read/written. A previous patch partly fixed this, but only protected the write to the interrupt mask register, and not the read from the direction register.