CVE-2026-99229 io_uring/wait: don't spin on a stuck overflow list

In the Linux kernel, the following vulnerability has been resolved: iouring/wait: don't spin on a stuck overflow list As long as IOCHECKCQOVERFLOWBIT is set, iocqringwaitschedule returns right away, before it gets to look at signals or arms the timeout, for iocqringwait to flush the overflow list...