CVE-2026-63958

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> usb: typec: ucsi: validate connector number in ucsi_connector_change()<br /> <br /> The connector number in a UCSI CCI notification is a 7-bit field<br /> supplied by the PPM. ucsi_connector_change() uses it to index the<br /> ucsi-&gt;connector[] array without checking it against the number of<br /> connectors the PPM reported at init time, so a buggy or malicious PPM<br /> (EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 /<br /> glink transports) can drive schedule_work() on memory past the end of<br /> the array.<br /> <br /> Reject connector numbers that are zero or exceed cap.num_connectors<br /> before dereferencing the array.