CVE-2026-74547

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread<br /> <br /> When userspace configures &amp;#39;auto_update_interval&amp;#39; to 0 via sysfs, the<br /> background kthread executes schedule_timeout_interruptible(0), which<br /> returns immediately.<br /> <br /> If &amp;#39;num_temp_sensors&amp;#39; is concurrently or previously set to 0, the<br /> msleep_interruptible() delay inside adt7470_read_temperatures() also<br /> becomes 0. This combination forces the background thread into a tight,<br /> unbounded busy-loop, hogging the CPU and flooding the I2C bus with a<br /> continuous stream of transactions.<br /> <br /> Fix this vulnerability by raising the lower limit of the clamp_val in<br /> auto_update_interval_store() from 0 to 500 milliseconds. This guarantees<br /> a reasonable minimum sleep window between sensor updates, protecting the<br /> system from intentional or accidental I2C bus denial of service.