kvm perf pebs

The tag kvm perf pebs covers a specific Linux kernel vulnerability (CVE-2025-37936) in the perf/x86/intel KVM subsystem. This flaw allows a guest virtual machine to run with PEBS (Precise Event-Based Sampling) enabled even when the guest did not request it. Microsoft's advisory lists Azure Linux as a potentially affected product, but the scope may extend to other Microsoft artifacts. Discussions focus on the technical details of the bug, its impact on KVM-based virtualization, and the implications for security in cloud and enterprise environments. The tag is relevant for IT professionals and developers working with Linux kernel performance monitoring, KVM, and Azure infrastructure.