FreeBSD-SA-20:28.bhyve_vmcs

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-20:28.bhyvevmcs Security Advisory The FreeBSD Project Topic: bhyve privilege escalation via VMCS access Category: core Module: bhyve Announced: 2020-09-15...

KVM (Nested Virtualization) - L1 Guest Privilege Escalation

When KVM on Intel virtualizes another hypervisor as L1 VM it does not verify that VMX instructions from the L1 VM which trigger a VM exit and are emulated by L0 KVM are coming from ring 0. For code running on bare metal or VMX root mode this is enforced by hardware. However, for code running in L...

PT-2017-12369 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.13.3 Description: The issue arises from the prepare vmcs02 function in arch/x86/kvm/vmx.c, which fails to ensure the existence of "CR8-load exiting" and "CR8-store exiting" L0 vmcs02 controls when L1 omits the...

CVE-2010-2938

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure VMCS implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux RHEL 5, when an Intel platform without Extended Page Tables EPT functionality is used, accesses VMCS fields without verifying hardware support for these...

Design/Logic Flaw

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure VMCS implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux RHEL 5, when an Intel platform without Extended Page Tables EPT functionality is used, accesses VMCS fields without verifying hardware support for these...

CVE-2010-2938

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure VMCS implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux RHEL 5, when an Intel platform without Extended Page Tables EPT functionality is used, accesses VMCS fields without verifying hardware support for these...

CVE-2010-2938

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure VMCS implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux RHEL 5, when an Intel platform without Extended Page Tables EPT functionality is used, accesses VMCS fields without verifying hardware support for these...

CVE-2010-2938

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure VMCS implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux RHEL 5, when an Intel platform without Extended Page Tables EPT functionality is used, accesses VMCS fields without verifying hardware support for these...

CVE-2010-2938

CVE-2010-2938 affects the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5, specifically arch/x86/hvm/vmx/vmcs.c VMCS handling. The flaw occurs on Intel platforms without Extended Page Tables (EPT) where VMCS fields are accessed without confirming hardware support. Local users can cause a denial...

kernel: guest crashes on non-EPT machines may crash the host as well

arch/x86/hvm/vmx/vmcs.c in the virtual-machine control structure VMCS implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux RHEL 5, when an Intel platform without Extended Page Tables EPT functionality is used, accesses VMCS fields without verifying hardware support for these...