PT-2017-7981

Name of the Vulnerable Software and Affected Versions bhyve versions 10.1 through 11.0 Description The issue is related to an integer overflow in the bhyve hypervisor when it is configured with a large amount of guest memory. This allows local users to gain privileges via a crafted device...

FreeBSD : xen-kernel -- x86: Mishandling of instruction pointer truncation during emulation (49211361-ba4d-11e6-ae1b-002590263bf5)

The Xen Project reports : When emulating HVM instructions, Xen uses a small i-cache for fetches from guest memory. The code that handles cache misses does not check if the address from which it fetched lies within the cache before blindly writing to it. As such it is possible for the guest to...

[SECURITY] Fedora 25 Update: xen-4.7.1-3.fc25

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

[SECURITY] Fedora 24 Update: xen-4.6.4-2.fc24

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

[SECURITY] Fedora 25 Update: xen-4.7.1-3.fc25

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

[SECURITY] Fedora 23 Update: xen-4.5.5-4.fc23

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

ARM guests may induce host asynchronous abort

ISSUE DESCRIPTION Depending on how the hardware and firmware have been integrated, guest-triggered asynchronous aborts SError on ARMv8 may be received by the hypervisor. The current action is to crash the host. A guest might trigger an asynchronous abort when accessing memory mapped hardware in a...

Xen elevation of privilege vulnerability (CNVD-2016-11705)

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. Xen has an elevation of privilege...

PT-2017-2404

Name of the Vulnerable Software and Affected Versions Xen affected versions not specified Description The issue allows local x86 guest OS users to modify arbitrary memory, obtain sensitive information, cause a denial of service host crash, or execute arbitrary code on the host. This is due to...

Debian DLA-720-1 : xen security update

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems : CVE-2016-9379, CVE-2016-9380 XSA-198 pygrub, the boot loader emulator, fails to quote or sanity check its results when reporting them to its...

[SECURITY] [DLA 720-1] xen security update

Package : xen Version : 4.1.6.lts1-4 CVE ID : CVE-2016-9379 CVE-2016-9380 CVE-2016-9381 CVE-2016-9382 CVE-2016-9383 CVE-2016-9386 Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2016-9379,...

DLA-720-1 xen - security update

Bulletin has no description...

CVE-2016-9383

Xen, when running on a 64-bit hypervisor, allows local x86 guest OS users to modify arbitrary memory and consequently obtain sensitive information, cause a denial of service host crash, or execute arbitrary code on the host by leveraging broken emulation of bit test instructions...

x86 segment base write emulation lacking canonical address checks

ISSUE DESCRIPTION Both writes to the FS and GS register base MSRs as well as the WRFSBASE and WRGSBASE instructions require their input values to be canonical, or a GP fault will be raised. When the use of those instructions by the hypervisor was enabled, the previous guard against GP faults havi...

[SECURITY] Fedora 25 Update: xen-4.7.0-7.fc25

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

VMware Patches Virtual Machine Escape Vulnerability

VMware quickly turned around a patch for a critical code execution flaw that was worth $150,000 to the researchers who found it. While there have been no reported public exploits, the vulnerability is serious because it could allow an attacker to access a virtual instance and run code on the host...

Xen: Multiple vulnerabilities

Background Xen is a bare-metal hypervisor. Description Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Impact A malicious guest administrator could escalate their privileges on the host system or cause a Denial of Service...

[SECURITY] Fedora 23 Update: xen-4.5.5-3.fc23

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

[SECURITY] Fedora 24 Update: xen-4.6.3-7.fc24

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

[SECURITY] [DLA 699-1] xen security update

Package : xen Version : 4.1.6.lts1-3 CVE ID : CVE-2016-7777 Xen does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the...