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...

slides

slides A collection of slides. 2025 A tale of challenging MTE: Rooting Google Pixel with kernel MTE enabled in one shot Conference: POC 2025 2024 Simple bug but not easy exploit: Rooting Android devices in one shot Conference: Cansecwest 2024 Almost same with POC 2023, except for MTE 2023 Simple...

KVM-Januscape

KVM-XJ Hot Patch dumptool.py automatically finds offsets; how to use it? Just read the code. Vulnerability Overview CVE-2026-53359 Januscape is a use-after-free UAF vulnerability in the Linux kernel KVM shadow MMU. Lurking time : 16 years August 2010 to July 2026 Affected range : All Intel/AMD x8...

CVE-2026-53359

🚨 CVE-2026-53359 — Januscape Linux KVM Shadow Paging Use-After-Free Guest-to-Host Escape Januscape is a Linux Kernel KVM vulnerability caused by a Use-After-Free UAF condition in the x86 Shadow MMU. Under vulnerable configurations, a malicious guest can corrupt host memory, leading to host crashe...

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...

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. ⚠️...

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...

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...

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...

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...

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...

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...

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...

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...

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

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

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...

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-2026-80560

A flaw was found in the Linux kernel, specifically within the openrisc architecture's signal handling. An unprivileged local attacker can exploit a vulnerability in the restoresigcontext function by crafting a malicious signal frame. This allows the attacker to disable the Data Memory Management...