kernel: KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU

A flaw was found in the Kernel-based Virtual Machine KVM component of the Linux kernel on ARM64 systems. A highly privileged local attacker could exploit a vulnerability where the system fails to properly restrict memory access during a specific virtual machine operation. This could allow the...

CVE-2026-53359

CVE-2026-53359 Un error de 16 años en el kernel de Linux permite que una VM alquilada se escape y ataque al host en el que se ejecuta. Januscape es una vulnerabilidad de tipo use-after-free en el código de KVM que ha estado presente desde 2010. Usando el script exploit-check.sh, podemos obtener m...

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...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: bcm: add locking for bcmop runtime updates CVE-2025-38004 kernel: iouring/poll: fix signed comparison in iopollgetownership CVE-2026-52933 kernel: netfilter: nat: use kfreercu to...

RHEL 9 : kernel (RHSA-2026:64808)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:64808 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: bcm: add locking for bcm...

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-2024-56426

Exynos 990 / Exynos9830 Unified BootROM Exploit Unified CVE-2024-56426 tooling for the Exynos 990 Galaxy S20, S20 FE, and Note20 families. The exploit accepts all ten model names and maps them onto six verified stock bootloader families. !CAUTION The tracked key bundle and generated images are...

itscape

ITScape — Linux KVM/arm64 guest-to-host escape tracking site Source for the ITScape patch-status tracker: a single-page site recording which distributions have shipped a fix for the KVM/arm64 guest-to-host escape in the Linux kernel. Where the facts live Everything about the bug — CVE IDs, affect...

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...

Oracle Linux 9 : qemu-kvm (ELSA-2026-500245)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500245 advisory. - dmg: reject inconsistent UDRW chunk sector count and length CVE-2026-65928 Stefan Hajnoczi Orabug: 39849788 CVE-2026-65928 - dmg: fix out-of-bounds...

Linux Distros Unpatched Vulnerability : CVE-2026-80873

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: Write ESREL2 for injected nested SError exceptions kvminjectel2exception writes ESREL2 for synchronous exceptions but not for SError...

Linux Distros Unpatched Vulnerability : CVE-2026-80853

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053262)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053262 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use scratch field in MMIO fragment to hold small write values When exiting to userspace...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-073356)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-073356 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Reject restored DTE with out-of-range numeventidbits Userspace can restore ...

SUSE CVE-2026-80853

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Allocate full pages for DE,ENCRYPT ops on SNP-enabled hosts When de,encrypting memory of an SEV or SEV-ES guest on an SNP-enabled host via a temporary buffer, allocate a full 4KiB page for the buffer to ensure the page...

SUSE 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...

SUSE CVE-2026-80891

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Validate AIBV and AISB before pinning guest pages The AIBV holds one bit per MSI-X vector for a given function. The size of the bit vector is derived from the NOI and the AIBVO. If the size of the AIBV exceeds a...

AZL-99477 CVE-2026-80891 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Validate AIBV and AISB before pinning guest pages The AIBV holds one bit per MSI-X vector for a given function. The size of the bit vector is derived from the NOI and the AIBVO. If the size of the AIBV exceeds a...

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...

CVE-2026-80891

CVE-2026-80891 affects the Linux kernel 's KVM s390 PCI subsystem. The vulnerability arises when the AIBV (Adaptive Interrupt Bit Vector) size—derived from the NOI and AIBVO—exceeds a single page boundary, making it impossible to safely pin the guest page. Additionally, the AISB (Adaptive Interru...