CVE-2015-2756: Undefined Security Weakness

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and then accessing...

Unmediated PCI command register access in qemu

ISSUE DESCRIPTION HVM guests are currently permitted to modify the memory and I/O decode bits in the PCI command register of devices passed through to them. Unless the device is an SR-IOV virtual function, after disabling one or both of these bits subsequent accesses to the MMIO or I/O port range...

Long latency MMIO mapping operations are not preemptible

ISSUE DESCRIPTION The XENDOMCTLmemorymapping hypercall allows long running operations without implementing preemption. This hypercall is used by the device model as part of the emulation associated with configuration of PCI devices passed through to HVM guests and is therefore indirectly exposed ...

xen-tools -- Unmediated PCI command register access in qemu

The Xen Project reports: HVM guests are currently permitted to modify the memory and I/O decode bits in the PCI command register of devices passed through to them. Unless the device is an SR-IOV virtual function, after disabling one or both of these bits subsequent accesses to the MMIO or I/O por...

xen-kernel and xen-tools -- Long latency MMIO mapping operations are not preemptible

The Xen Project reports: The XENDOMCTLmemorymapping hypercall allows long running operations without implementing preemption. This hypercall is used by the device model as part of the emulation associated with configuration of PCI devices passed through to HVM guests and is therefore indirectly...

Scientific Linux Security Update : libvirt on SL7.x x86_64 (20150305)

It was found that QEMU's qemuDomainMigratePerform and qemuDomainMigrateFinish2 functions did not correctly perform a domain unlock on a failed ACL check. A remote attacker able to establish a connection to libvirtd could use this flaw to lock a domain of a more privileged user, causing a denial o...

CentOS 7 : libvirt (CESA-2015:0323)

Updated libvirt packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Low security impact. Common Vulnerability Scoring System CVSS base scores, which give detail...

libvirt security update

CentOS Errata and Security Advisory CESA-2015:0323 Updated libvirt packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Low security impact. Common Vulnerability...

[SECURITY] [DSA 3181-1] xen security update

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3181-1 [email protected] http://www.debian.org/security/ Moritz Muehlenhoff March 10, 2015 http://www.debian.org/security/faq -...

Xen Denial of Service Vulnerability (CNVD-2015-01674)

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 X...

Unbreakable Enterprise kernel security update

2.6.39-400.248.3 - kvm: fix excessive pages un-pinning in kvmiommumap error path. Quentin Casasnovas Orabug: 20687314 CVE-2014-3601 CVE-2014-8369 CVE-2014-3601 - Revert 'mm: Fix NULL pointer dereference in madviseMADVWILLNEED support' Guangyu Sun Orabug: 20673281 CVE-2014-8173 2.6.39-400.248.2 -...

CVE-2015-2150

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...

CVE-2015-2150

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...

Command injection

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...

CVE-2015-2150

CVE-2015-2150 affects Xen 3.3.x–4.5.x and the Linux kernel up to 3.19.1, where access to PCI command registers is not properly restricted. This can allow a local guest OS user to cause a denial of service (unexpected NMI, host crash) by disabling memory or I/O decoding for a PCI Express device an...

CVE-2015-2150

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...

CVE-2015-2150

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...

CVE-2015-2150

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...

PT-2015-5630

Name of the Vulnerable Software and Affected Versions Xen versions 3.3.x through 4.5.x Linux kernel versions prior to 3.19.1 Description The issue is related to improper restriction of access to PCI command registers. This might allow local guest OS users to cause a denial of service, resulting i...

CVE-2015-2150

Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service non-maskable interrupt and host crash by disabling the 1 memory or 2 I/O decoding for a PCI Express device and...