DEBIAN-CVE-2017-15593

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service memory leak because reference counts are mishandled...

ALPINE-CVE-2017-14319

A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence ...

ALPINE-CVE-2017-12137

arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to mapgrantref...

Xen: Privilege Escalation

Background Xen is a bare-metal hypervisor. Description In CIRRUSBLTMODEMEMSYSSRC mode the bitblit copy routine cirrusbitbltcputovideo fails to check wethehr the specified memory region is safe. Impact A local attacker could potentially execute arbitrary code with privileges of Xen QEMU process on...

UBUNTU-CVE-2016-7092

The getpagefroml3e function in arch/x86/mm.c in Xen allows local 32-bit PV guest OS administrators to gain host OS privileges via vectors related to L3 recursive pagetables...

ALPINE-CVE-2016-6258

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries...

UBUNTU-CVE-2016-6258

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries...

Xen elevation of privilege vulnerability (CNVD-2016-05535)

Xen is an open source virtual machine monitor product developed at the University of Cambridge in the United Kingdom. There is a security vulnerability in Xen that can be exploited by PV-mode VM administrators to penetrate to the host system...

Xen PV Virtual Machine Denial of Service Vulnerability

Xen is an open source virtual machine monitor product. A security vulnerability in Xen's PV virtual machines when hugetlbfs support is enabled allows attackers to exploit the vulnerability to trigger an infinite loop of error pages for denial-of-service attacks...

DEBIAN-CVE-2016-3961

Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service guest OS crash by attempting to access a hugetlbfs mapped area...

UBUNTU-CVE-2016-3961

Xen and the Linux kernel through 4.5.x do not properly suppress hugetlbfs support in x86 PV guests, which allows local PV guest OS users to cause a denial of service guest OS crash by attempting to access a hugetlbfs mapped area...

DEBIAN-CVE-2015-8550

Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service host OS crash or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability...

DEBIAN-CVE-2016-3157

The switchto function in arch/x86/kernel/process64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service guest OS crash, or obtain sensitive information by leveraging I/O port access...

Xen 'PV superpage' function security bypass vulnerability

Xen is an open source virtual machine monitor product developed at the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. A security vulnerability exists in t...

Xen Patches VM Escape Vulnerability

The Xen Project, which oversees the open source Xen hypervisor, yesterday patched a seven-year-old vulnerability that allows an attacker to escape a guest virtual machine and attack the host operating system. The flaw is so bad that the developers of the Qubes OS Project, a security-heavy operati...

DEBIAN-CVE-2011-1166

Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service host crash by specifying user mode execution without user-mode pagetables...

The United States VPS management system SolusVM 1.13.03 SQL injection vulnerability with exp-a vulnerability warning-the black bar safety net

SolusVM software is a powerful graphical user interface for VPS management system that can simultaneously manage three kinds of Virtualization Technology: OpenVZ ,Xen Paravirtualization and Xen HVM in. The use of this software open us VPS customer, will feel he is very safe and convenient. Poor...

guest denial of service on syscall/sysenter exception generation

ISSUE DESCRIPTION When guest user code running inside a Xen guest operating system attempts to execute a syscall or sysenter instruction, but when the guest operating system has not registered a handler for that instruction, a General Protection Fault may need to be injected into the guest. It ha...

64-bit PV guest privilege escalation vulnerability

ISSUE DESCRIPTION Rafal Wojtczuk has discovered a vulnerability which can allow a 64-bit PV guest kernel running on a 64-bit hypervisor to escalate privileges to that of the host by arranging for a system call to return via sysret to a non-canonical RIP. Intel CPUs deliver the resulting exception...

PT-2013-2171 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 3.7.9 Description: The issue arises from the xen iret function in arch/x86/xen/xen-asm 32.S, which does not properly handle an invalid value in the DS segment register on 32-bit Xen paravirt ops platforms. This...