UBUNTU-CVE-2025-37936

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: KVM: Mask PEBSENABLE loaded for guest with vCPU's value. When generating the MSRIA32PEBSENABLE value that will be loaded on VM-Entry to a KVM guest, mask the value with the vCPU's desired PEBSENABLE value...

CVE-2025-37936

CVE-2025-37936: Linux kernel issue in perf/x86/intel/KVM where MSR_IA32_PEBS_ENABLE loaded for a guest could be masked incorrectly when deriving PEBS_ENABLE, causing guest PEBS to be enabled unintentionally and potentially crash the guest with a flood of #PFs. The fix masks the guest MSR value us...