CVE-2026-63883 serial: qcom_geni: fix kfifo underflow when flush precedes DMA completion IRQ

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

PT-2026-61200

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the qcom geni serial driver when uart flush buffer is executed before the DMA completion interrupt request IRQ is delivered. If kfifo reset is called while a D...