cve-2023-20573-poc

PoC 使用方法 本仓库包含一个 VMM，它使用自定义内核启动 SEV-SNP 虚拟机。该 VMM 和内核是我个人项目的一个精简版本。需要在主机上运行经过修改的 Linux 内核：https://github.com/Freax13/linux/tree/for-amd。 可按照以下方式运行概念验证： root@kitploit: cd host cargo run -p vmm 说明 该代码在两条指令之间来回跳转： root@kitploit: 2: nop jmp 2b 当 FLAGS 寄存器中的 TF 标志被设置时，异常应被生成，且指令指针将在两条指令之间交替。...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001591)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001591 advisory. A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instructio...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002573)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002573 advisory. A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instructio...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002799)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002799 advisory. A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instructio...

kernel: x86/bhi: Avoid warning in #DB handler due to BHI mitigation

A denial of service vulnerability was found in the Linux kernel. When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set, then entrySYSENTERcompat uses CLEARBRANCHHISTORY and calls the clearbhbloop before the TF flag is cleared. This causes the DB handler excdebugkernel to iss...

kernel: x86/bhi: Avoid warning in #DB handler due to BHI mitigation

A denial of service vulnerability was found in the Linux kernel. When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set, then entrySYSENTERcompat uses CLEARBRANCHHISTORY and calls the clearbhbloop before the TF flag is cleared. This causes the DB handler excdebugkernel to iss...

SUSE CVE-2024-42240

In the Linux kernel, the following vulnerability has been resolved: x86/bhi: Avoid warning in DB handler due to BHI mitigation When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set then entrySYSENTERcompat uses CLEARBRANCHHISTORY and calls the clearbhbloop before the TF flag...

AZL-47791 CVE-2024-42240 affecting package kernel for versions less than 5.15.167.1-1

In the Linux kernel, the following vulnerability has been resolved: x86/bhi: Avoid warning in DB handler due to BHI mitigation When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set then entrySYSENTERcompat uses CLEARBRANCHHISTORY and calls the clearbhbloop before the TF flag...

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 a problem with the x86/bhi module BHI mitigation mechanism when handling SYSENTER calls. When the TF flag bi...

SUSE CVE-2017-7518

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to...

EulerOS Virtualization 3.0.1.0 : kvm (EulerOS-SA-2019-1450)

According to the versions of the kvm package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The msrmtrrvalid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to...

DEBIAN-CVE-2017-7518

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to...

Design/Logic Flaw

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to...

CVE-2017-7518

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to...

Kernel: KVM: debug exception via syscall emulation

A flaw was found in the way the Linux KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges insi...

Kernel: KVM: debug exception via syscall emulation

A flaw was found in the way the Linux KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges insi...

UBUNTU-CVE-2017-7518

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to...

VMSA-2008-0018 : VMware Hosted products and patches for ESX and ESXi resolve two security issues

a. A privilege escalation on 32-bit and 64-bit guest operating systems VMware products emulate hardware functions and create the possibility to run guest operating systems. A flaw in the CPU hardware emulation might allow the virtual CPU to incorrectly handle the Trap flag. Exploitation of this...

VMware Products Trap Flag In-Guest Privilege Escalation Vulnerability (Linux)

The host is installed with VMWare products that are vulnerable to privilege escalation vulnerability. OpenVAS Vulnerability Test $Id: gbvmwareprdtsinguestprvescvulnlin.nasl 6539 2017-07-05 12:02:14Z cfischer $ VMware Products Trap Flag In-Guest Privilege Escalation Vulnerability Linux Authors:...

VMware Products Trap Flag In-Guest Privilege Escalation Vulnerability (Windows)

The host is installed with VMWare products that are vulnerable to privilege escalation vulnerability. OpenVAS Vulnerability Test $Id: gbvmwareprdtsinguestprvescvulnwin.nasl 6518 2017-07-04 13:49:06Z cfischer $ VMware Products Trap Flag In-Guest Privilege Escalation Vulnerability Windows Authors:...