CVE-2026-93123 serial: qcom-geni: do not advance stale DMA completions

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: do not advance stale DMA completions The qcom GENI serial DMA TX completion path advances the transmit fifo by the number of bytes recorded in port-txremaining. If uartflushbuffer runs after the hardware has...