CVE-2025-37880

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> um: work around sched_yield not yielding in time-travel mode<br /> <br /> sched_yield by a userspace may not actually cause scheduling in<br /> time-travel mode as no time has passed. In the case seen it appears to<br /> be a badly implemented userspace spinlock in ASAN. Unfortunately, with<br /> time-travel it causes an extreme slowdown or even deadlock depending on<br /> the kernel configuration (CONFIG_UML_MAX_USERSPACE_ITERATIONS).<br /> <br /> Work around it by accounting time to the process whenever it executes a<br /> sched_yield syscall.