hyperv_local_dos_poc

PoC de DoS en Hyper-V. Estos son archivos de código del proyecto de controlador de Visual Studio 2019. 1. Compilar el controlador. 2. Habilitar la virtualización anidada para el SO invitado usando el comando: root@kitploit: Set-VMProcessor -VMName -ExposeVirtualizationExtensions $true 3. Ejecutar...

Januscape

Januscape: Escape de Invitado a Anfitrión en KVM/x86 Resumen Este documento describe la vulnerabilidad Januscape CVE-2026-53359 descubierta e informada por Hyunwoo Kim @v4bel. Es una vulnerabilidad de escape de KVM que permite que un invitado escape al anfitrión en un entorno KVM/x86. Hasta donde...

CVE-2026-64561

CVE-2026-64561 — Zapscape: KVM/x86 shadow MMU UAF, guest escape to host root HackSpeak distribution mirror. This repository is a distribution mirror of the complete PoC + technical write-up publicly released by researcher Hyunwoo Kim @v4bel , with code and documentation identical to upstream. ⚠️...

CVE-2026-80873

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Write ESREL2 for injected nested SError exceptions kvminjectel2exception writes ESREL2 for synchronous exceptions but not for SError. enterexception64 does not write ESRELx for any exception type, so the construct...

The vulnerability of the kvm_vcpu_init_nested() function in the arch/arm64/kvm/nested.c module of the virtualization subsystem on the 64-bit ARM-based Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the kvmvcpuinitnested function in the arch/arm64/kvm/nested.c module of the virtualization subsystem on the 64-bit ARM-based Linux operating system is related to the copying of buffers without checking input data. Exploiting this vulnerability could allow an attacker to...

Zapscape

The KVM Escape Trilogy ITScape CVE‑2026‑46316 | Januscape CVE‑2026‑53359 | Zapscape CVE‑2026‑64561 ---|---|--- Zapscape: Guest-to-Host Escape in KVM/x86 Abstract This document describes the Zapscape CVE-2026-64561 vulnerability discovered and reported by Hyunwoo Kim @v4bel. It is a KVM escape...

CVE-2021-3656-Demo

CVE-2021-3656: Este problema es causado por la falta de validación del campo virtext del VMCB y permite que un invitado L1 malicioso deshabilite tanto las interceptaciones de VMLOAD/VMSAVE como el VLS Virtual VMLOAD/VMSAVE para el invitado L2. Bajo estas circunstancias, el invitado L2 puede...

CVE-2026-80699

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component for ARM64 architectures. This vulnerability, specifically affecting AmpereOne processors, occurs when a physical interrupt is double-deactivated in a nested virtualization context. An attacker could potentially...

KVM-Januscape

KVM-XJ 热补丁 dumptool.py 是自动寻找偏移，怎么用就自己看代码 漏洞概述 CVE-2026-53359（Januscape）是 Linux 内核 KVM 影子 MMU 中的释放后使用（UAF）漏洞。 潜伏时间：16 年（2010年8月至2026年7月） 影响范围：所有启用嵌套虚拟化的 Intel/AMD x86 系统 危害等级：高危，VM 内 root 用户可逃逸到母鸡，获取母鸡 root 权限 利用方式：母鸡内核 panic（DoS）或完整虚拟机逃逸（无公开POC） 漏洞原理 kvmmmugetpage 函数在哈希表中查找可复用的影子页表时，仅比较了...

Linux Distros Unpatched Vulnerability : CVE-2026-80665

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns...

SUSE CVE-2026-80699

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Avoid double-deactivate of IRQs in the nested context In the nested state, the physical interrupt has already been deactivated through the HW bit in the LR. The extra deactivation would be harmless but can hit a...

CVE-2026-80665

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns -EFAULT. This is not always the case as it's possible to encounter 'late...

CVE-2026-80665

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns -EFAULT. This is not always the case as it's possible to encounter 'late...

CVE-2026-80699

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Avoid double-deactivate of IRQs in the nested context In the nested state, the physical interrupt has already been deactivated through the HW bit in the LR. The extra deactivation would be harmless but can hit a...

UBUNTU-CVE-2026-80665

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns -EFAULT. This is not always the case as it's possible to encounter 'late...

CVE-2026-80665

This vulnerability affects the Linux kernel's KVM arm64 nested virtualization subsystem. The root cause is in kvm_handle_vncr_abort() , which incorrectly assumes that a -EFAULT return from kvm_translate_vncr() always conveys an abort. In practice, "late" failures on S1 translation output (e.g., a...

EUVD-2026-67541

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns -EFAULT. This is not always the case as it's possible to encounter 'late...

CVE-2026-80665

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns -EFAULT. This is not always the case as it's possible to encounter 'late...

CVE-2026-80665 KVM: arm64: nv: Inject SEA if kvm_translate_vncr() can't resolve PFN

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvmtranslatevncr can't resolve PFN kvmhandlevncrabort assumes that s1walkresult conveys an abort when kvmtranslatevncr returns -EFAULT. This is not always the case as it's possible to encounter 'late...

CVE-2026-64562

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM nested virtualization nVMX feature. This vulnerability occurs because the shadow Virtual Machine Control Structure VMCS is freed prematurely while still being referenced. Due to asynchronous operations, a virtual CPU vCPU mig...