Threats tagged 'ghsa-r3mw-x3xp-fjpr'

A vulnerability in the Linux kernel's xilinx_dma driver causes the CPU to stall due to a busy-wait loop when xilinx_dma_poll_timeout is called with delay_us=0 and the condition never fulfills. This results in a prolonged CPU busy-wait lasting several minutes instead of timing out promptly. The issue arises from an underestimation of wall clock time in poll_timeout_us_atomic after a kernel commit changed timing behavior. The fix involves setting delay_us to a non-zero value (10 microseconds) to prevent CPU stalls while keeping DMA transfer startup delay minimal.