CVE-2025-38565

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> perf/core: Exit early on perf_mmap() fail<br /> <br /> When perf_mmap() fails to allocate a buffer, it still invokes the<br /> event_mapped() callback of the related event. On X86 this might increase<br /> the perf_rdpmc_allowed reference counter. But nothing undoes this as<br /> perf_mmap_close() is never called in this case, which causes another<br /> reference count leak.<br /> <br /> Return early on failure to prevent that.