CVE-2015-8104: The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to...

Security readout for executives and security teams

This is a guest-to-host denial-of-service flaw in virtualization. A malicious or compromised VM could make the underlying Linux KVM or Xen host panic or hang by causing many debug exceptions. Business impact is downtime across co-resident VMs on affected hypervisors; sources do not support data theft or active exploitation. Exposure is most likely in organizations running affected Linux KVM or Xen virtualization hosts, especially older unpatched kernels or Xen 4.3.x through 4.6.x. The provided affected-product metadata is incomplete, so inventory should use hypervisor and kernel package versions, not the n/a CPE fields. Prioritize patching if affected hypervisors host production or untrusted VMs. The main credible risk is service outage, potentially affecting many workloads on one physical host. Urgency is lower where affected versions are absent or hosts run only trusted isolated workloads. Mitigation focus: Apply vendor kernel or Xen security updates for affected virtualization hosts.; Prioritize Red Hat, Ubuntu, Debian, SUSE, Fedora, Oracle, and Juniper advisories where relevant.; Check the upstream Linux commit and vendor backports for package-specific fix status..

Prepared

May 22, 2026, 06:10 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.