CVE-2023-53208 KVM: nSVM: Load L1's TSC multiplier based on L1 state, not L2 state

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Load L1's TSC multiplier based on L1 state, not L2 state When emulating nested VM-Exit, load L1's TSC multiplier if L1's desired ratio doesn't match the current ratio, not if the ratio L1 is using for L2 diverges from...

DEBIAN-CVE-2023-53175

In the Linux kernel, the following vulnerability has been resolved: PCI: hv: Fix a crash in hvpcirestoremsimsg during hibernation When a Linux VM with an assigned PCI device runs on Hyper-V, if the PCI device driver is not loaded yet i.e. MSI-X/MSI is not enabled on the device yet, doing a VM...

Unspecified vulnerability in Xen (CNVD-2025-21331)

Xen is an open source virtual machine monitor product from Xen Open Source. The product enables different and incompatible operating systems to run on the same computer and supports migration at runtime to ensure uptime and avoid downtime. Xen has a security vulnerability that can be exploited by...

PT-2025-37697

Name of the Vulnerable Software and Affected Versions: Linux Kernel affected versions not specified Description: The Linux kernel contains a flaw in the arm ffa firmware where the device naming scheme for logical partitions fails to uniquely identify multiple services within a physical partition...

ctf-tasks

This is a CTF Capture The Flag challenge repository from the CONFidence CTF 2014 event. The repository contains several files and directories related to two tasks: "Crypto Machine" and "Memory". Crypto Machine The "Crypto Machine" task is a reverse engineering challenge that involves exploiting a...

Kernel-Bridge

This repository is an offensive tool for Windows kernel hacking. It is a Windows kernel hacking framework, driver template, hypervisor, and API written in C++. The primary function of this framework is to provide a set of tools for kernel-mode code injection, hooking, and manipulation. The...

x86/vmscape: Add conditional IBPB mitigation

...

SUSE CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

AZL-74763 CVE-2025-40300 affecting package kernel for versions less than 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

CVE-2025-40300

The CVE-2025-40300 issue affects the Linux kernel’s x86/vmscape mitigation. The vulnerability arises from insufficient branch predictor isolation between a guest and a userspace hypervisor, which is mitigated by conditionally issuing an IBPB after VMexit and before returning to userspace. The fix...

CVE-2025-40300 x86/vmscape: Add conditional IBPB mitigation

In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor like QEMU. Existing mitigations already protect kernel/KVM...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from insufficient branch predictor isolation, which could lead to a cross-user-space virtual machine attack...

Xen 安全漏洞

Xen is an open source virtual machine monitor product from Xen Open Source. The product enables different and incompatible operating systems to run on the same computer and supports migration at runtime to ensure uptime and avoid downtime. Xen has a security vulnerability that can be exploited by...

Branch Predictor Isolation in KVM-QEMU

Summary Researchers claim new KVM-QEMU primitives allow exploitation of Spectre V2 resulting in information leakage in various cloud scenarios. KVM-QEMU is a combination of KVM Kernel-based Virtual Machine, a Linux kernel module that enables hardware-assisted virtualization and Quick Emulator QEM...

Xen 安全漏洞

Xen is an open source virtual machine monitor product from Xen Open Source. The product enables different and incompatible operating systems to run on the same computer and supports migration at runtime to ensure uptime and avoid downtime. Xen has a security vulnerability that can be exploited by...

Linux Distros Unpatched Vulnerability : CVE-2019-11925

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Insufficient boundary checks when processing the JPEG APP12 block marker in the GD extension could allow access to out-of-bounds memory via a maliciously...

Linux Distros Unpatched Vulnerability : CVE-2016-6874

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The arrayrecursive functions in Facebook HHVM before 3.15.0 allows attackers to have unspecified impact via unknown vectors, related to recursion. CVE-2016-6874...

Linux Distros Unpatched Vulnerability : CVE-2020-1919

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Incorrect bounds calculations in substrcompare could lead to an out-of-bounds read when the second string argument passed in is longer than the first. This issu...

Linux Distros Unpatched Vulnerability : CVE-2020-1898

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The fbunserialize function did not impose a depth limit for nested deserialization. That meant a maliciously constructed string could cause deserialization to...