Januscape

Januscape: KVM/x86におけるゲストからホストへの脱出 概要 このドキュメントは、Hyunwoo Kim @v4bel によって発見・報告された Januscape CVE-2026-53359 脆弱性について説明します。これはKVM/x86環境においてゲストからホストへの脱出を可能にするKVMエスケープ脆弱性です。公に知られている限り、これはIntelとAMDの両方でトリガー可能な初のゲスト-to-ホストエクスプロイト研究であり、単一アーキテクチャに限定されません。 JanuscapeはKVM/x86のシャドウMMU...

Zapscape

KVM 逃逸三部曲 ITScape CVE‑2026‑46316 | Januscape CVE‑2026‑53359 | Zapscape CVE‑2026‑64561 ---|---|--- Zapscape：KVM/x86 中的客户机到宿主机逃逸 摘要 本文档描述了由 Hyunwoo Kim @v4bel 发现并报告的 Zapscape CVE-2026-64561 漏洞。这是一个 KVM 逃逸漏洞，允许客户机在 KVM/x86 环境中逃逸到宿主机，并以内核（root）权限在宿主机上执行命令。 Zapscape 是 KVM/x86 的影子 MMU（shadow...

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diapositivas Una colección de diapositivas. 2025 Una historia sobre cómo desafiar a MTE: Rootear Google Pixel con el MTE del kernel habilitado en un solo intento Conferencia: POC 2025 2024 Un bug simple pero no fácil de explotar: Rootear dispositivos Android de una sola vez Conferencia: Cansecwes...

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...

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...

CVE-2026-53359

🚨 CVE-2026-53359 — Januscape Linux KVM 影子分页释放后使用（客户机到宿主机逃逸） Januscape 是一个 Linux 内核 KVM 漏洞，由 x86 影子 MMU 中的释放后使用（UAF） 条件导致。在易受攻击的配置下，恶意客户机可以破坏宿主机内存，导致宿主机崩溃并可能破坏虚拟机隔离。 📌 概述 字段| 值 ---|--- CVE| CVE-2026-53359 别名| Januscape 组件| Linux 内核 KVM（x86 影子 MMU） 漏洞类型| 释放后使用 攻击向量| 客户机虚拟机 影响| 宿主机内核内存破坏 受影响平台| Inte...

CVE-2026-64561

CVE-2026-64561 — Zapscape:KVM/x86 shadow MMU UAF,guest 逃逸到 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。 漏洞简述...

Januscape-Hotfix

Januscape 修复方案库 — CVE-2026-53359 English KVM/x86 shadow MMU 虚拟机逃逸漏洞（CVE-2026-53359）的完整修复方案集合 。 从零停机热修复到内核升级，覆盖所有运维场景。 一键诊断 & 修复 root@kitploit: GitHub 直连 curl -sL https://raw.githubusercontent.com/Aoripus-LTD/Januscape-Hotfix/main/tools/januscape-fix.sh | sudo bash 中国大陆镜像加速 curl -sL...

CVE-2026-80726

A flaw was found in KVM Kernel-based Virtual Machine. This vulnerability occurs in the x86 Memory Management Unit MMU when creating a child shadow page. An attacker, potentially a malicious guest operating system, could exploit this by triggering a use-after-free condition due to incorrect handli...

KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page

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Linux Distros Unpatched Vulnerability : CVE-2026-80726

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its pare...

Oracle Linux 8 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500249)

The remote Oracle Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500249 advisory. - inet: frags: strip GSO state from fragments before reassembly Xinyang Ge Orabug: 39974835 CVE-2026-80590 - KVM: x86/mmu: Stop needlessly making...

UBUNTU-CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

SUSE CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

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...

AZL-99062 CVE-2026-80726 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

EUVD-2026-70330

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page Explicitly clear role.invalid when deriving a child shadow page's role from its parent to harden against bugs elsewhere in KVM, as violating KVM's...

CVE-2026-80726

CVE-2026-80726 affects the Linux kernel's KVM x86 MMU subsystem . The root cause is that role.invalid is not explicitly cleared when deriving a child shadow page's role from its parent. This violates KVM's invariant that invalid pages are not on the active MMU page list, leading to a use-after-fr...