20 matches found
Januscape
Januscape: Guest-to-Host Escape in KVM/x86 Abstract This document describes the Januscape CVE-2026-53359 vulnerability discovered and reported by Hyunwoo Kim @v4bel. It is a KVM escape vulnerability that lets a guest escape to the host in a KVM/x86 environment. To the best of public knowledge, th...
Januscape-Hotfix
Januscape Fix Library — CVE-2026-53359 简体中文 Complete fix collection for the CVE-2026-53359 guest-to-host escape vulnerability in the KVM/x86 shadow MMU. From zero-downtime livepatch to kernel upgrade — covers every operational scenario. One-liner Direct curl -sL...
Zapscape
La trilogía de escapes de KVM ITScape CVE‑2026‑46316 | Januscape CVE‑2026‑53359 | Zapscape CVE‑2026‑64561 ---|---|--- Zapscape: Escape de invitado a host en KVM/x86 Resumen Este documento describe la vulnerabilidad Zapscape CVE-2026-64561 , descubierta e informada por Hyunwoo Kim @v4bel. Es una...
KVM-Januscape
KVM-XJ: parche en caliente dumptool.py encuentra los offsets automáticamente; para saber cómo usarlo, lee el código tú mismo. Resumen de la vulnerabilidad CVE-2026-53359 Januscape es una vulnerabilidad de use-after-free UAF en el MMU sombra de KVM del kernel de Linux. Tiempo latente: 16 años agos...
CVE-2026-53359
🚨 CVE-2026-53359 — Januscape Linux KVM Shadow Paging Use-After-Free Escape de Invitado a Anfitrión Januscape es una vulnerabilidad del Kernel de Linux KVM causada por una condición de Use-After-Free UAF en la x86 Shadow MMU. Bajo configuraciones vulnerables, un invitado malicioso puede corromper ...
CVE-2026-64561
CVE-2026-64561 — Zapscape: KVM/x86 shadow MMU UAF, escape del guest al host root HackSpeak 分发镜像。本仓库为研究员 Hyunwoo Kim@v4bel公开的完整 PoC + 技术文档的分发镜像 ,代码与文档与上游一致。 ⚠️ 上游未附 LICENSE :镜像按分发惯例采用 MIT License,Copyright c 2026 HackSpeak ,源码版权归原代码作者 V4bel / @v4bel。PoC 未经真机验证 ,请先在可销毁环境QEMU TCG测试,勿对未授权目标使用。 Resumen...
OESA-2026-3709 kernel security update
The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Check for invalid/obsolete root after making MMU pages available\n\nCheck for a "stale" page fault, i.e. for an invalid and/or obsolete root, after...
Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a “stale” page fault, i.e., an invalid and/or obsolete root. This occurs after making MMU pages available for the shadow MMU. If reclaiming shad...
Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102004)
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102004 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN The shadow MMU computes GFNs for...
The vulnerability of the Shadow MMU management mechanism for page-level shadow tables in the KVM subsystem of the Linux operating system allows a perpetrator to escalate their privileges, execute arbitrary code, or cause service interruptions.
The vulnerability of the Shadow MMU management mechanism for virtual machine tables in Linux kernel-based virtual machines is related to the dereferencing of pointers with expired lifetimes. Exploiting this vulnerability can allow an attacker to enhance their privileges, execute arbitrary code, o...
Zapscape
The KVM Escape Trilogy ITScape CVE202646...
CVE-2026-64561
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a "stale" page fault, i.e. for an invalid and/or obsolete root, after making MMU pages available for the shadow MMU. If reclaiming shadow pages...
CVE-2026-64561
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a "stale" page fault, i.e. for an invalid and/or obsolete root, after making MMU pages available for the shadow MMU. If reclaiming shadow pages...
CVE-2026-64561 KVM: x86: Check for invalid/obsolete root *after* making MMU pages available
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a "stale" page fault, i.e. for an invalid and/or obsolete root, after making MMU pages available for the shadow MMU. If reclaiming shadow pages...
CVE-2026-64561: Undefined Security Weakness
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Check for invalid/obsolete root after making MMU pages available Check for a "stale" page fault, i.e. for an invalid and/or obsolete root, after making MMU pages available for the shadow MMU. If reclaiming shadow pages...
SUSE CVE-2026-63807
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level When recovering hugepages in the shadow MMU, verify that the base gfn of the shadow page is actually contained within the target memslot, before queryi...
CVE-2026-63807
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level When recovering hugepages in the shadow MMU, verify that the base gfn of the shadow page is actually contained within the target memslot, before queryi...
CVE-2026-63807: Out-of-bounds Read
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level When recovering hugepages in the shadow MMU, verify that the base gfn of the shadow page is actually contained within the target memslot, before queryi...
PT-2026-67668
Name of the Vulnerable Software and Affected Versions Linux kernel versions 5.9 and earlier Description An issue exists in the KVM x86 component where the system fails to check for a stale page fault, specifically an invalid or obsolete root, after making MMU pages available for the shadow MMU. I...