Unbounded TX busy-loop DoS in Zephyr PL011 UART driver under CTS hardware flow control_CVE-2026-10642
The Zephyr PL011 UART driver (drivers/serial/uart_pl011.c) contains an unbounded software loop in pl011_irq_tx_enable() that repeatedly invokes the interrupt-driven application callback while the TX interrupt mask bit (PL011_IMSC_TXIM) is set, to work around the controller's l...