CVE-2017-2583: The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 impro...

Security readout for executives and security teams

CVE-2017-2583 is a Linux KVM bug where a user inside a virtual machine could crash that guest or potentially gain higher privileges inside that guest. The provided sources do not show host escape or active exploitation. Urgency is highest for organizations running untrusted or multi-user KVM guests on unpatched host kernels. Exposure is likely limited to Linux systems using KVM virtualization with affected x86 kernel code, especially kernels before 4.9.5 or vendor builds missing the backport. Risk requires code execution by a user or process inside a guest VM. Treat as a scheduled security patch unless your environment runs untrusted shared VMs, where it should be prioritized sooner. The business impact is guest compromise or guest outage, not confirmed host takeover based on the provided sources. Mitigation focus: Patch KVM host kernels to Linux 4.9.5 or vendor-fixed equivalents.; Apply relevant Red Hat, Ubuntu, or Debian kernel advisories where applicable.; Prioritize hosts running untrusted, multi-user, or externally managed guests..

Prepared

Jun 13, 2026, 06:20 UTC (UTC+00:00)

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