In the Linux kernel, the following vulnerability has been resolved: clk: thead: th1520-ap: set all AXI clocks to CLKISCRITICAL The AXI crossbar of TH1520 has no proper timeout handling, which means gating AXI clocks can easily lead to bus timeout and thus system hang. Set all AXI clock gates to CLKISCRITICAL. All these clock gates are ungated by default on system reset. In addition, convert all current CLKIGNOREUNUSED usage to CLKISCRITICAL to prevent unwanted clock gating.