The vulnerability of Xen hypervisors, which allows a malicious actor to trigger a service failure

The vulnerability of Xen hypervisors exists due to insufficient checking of input data. Exploiting this vulnerability can allow a local attacker to trigger a service failure host reboot by manipulating numerous MMIO pages with various cache settings...

DEBIAN-CVE-2016-2270

Xen 4.6.x and earlier allows local guest administrators to cause a denial of service host reboot via vectors related to multiple mappings of MMIO pages with different cachability settings...

CentOS 7 : kernel (CESA-2015:2552)

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

RedHat Update for kernel RHSA-2015:2552-01

The remote host is missing an update for the SPDX-FileCopyrightText: 2015 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

kernel: kvm: reporting emulation failures to userspace

It was found that reporting emulation failures to user space could lead to either a local CVE-2014-7842 or a L2-L1 CVE-2010-5313 denial of service. In the case of a local denial of service, an attacker must have access to the MMIO area or be able to access an I/O port. Please note that on certain...

kernel: kvm: noncanonical rip after emulation

A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP for example, branches or calls. A guest user with access to an I/O or MMIO region could use this flaw to crash the guest...

USN-2777-1: Linux kernel (Utopic HWE) vulnerabilities

It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service system crash or possibly execute code with administrative privileges. CVE-2015-5156 Benjamin Randazzo...

Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2777-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2777-1 advisory. It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker...

PT-2016-4036 · Qemu Team +2 · Qemu +2

Name of the Vulnerable Software and Affected Versions: QEMU affected versions not specified Description: The issue is related to the cpu physical memory write rom internal function in exec.c, which does not properly skip MMIO regions. This allows local privileged guest users to cause a denial of...

Debian: Security Advisory (DSA-3364-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2015 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Linux/x86 Memory Sinkhole Proof Of Concept

; memory sinkhole proof of concept ; hijack ring -2 execution through the apic overlay attack. ; deployed in ring 0 ; the SMBASE register of the core under attack TARGETSMBASE equ 0x1f5ef800 ; the location of the attack GDT. ; this is determined by which register will be read out of the APIC ; fo...

Linux Kernel (x86) - Memory Sinkhole Privilege Escalation

; memory sinkhole proof of concept ; hijack ring -2 execution through the apic overlay attack. ; deployed in ring 0 ; the SMBASE register of the core under attack TARGETSMBASE equ 0x1f5ef800 ; the location of the attack GDT. ; this is determined by which register will be read out of the APIC ; fo...

xen: Insufficient bounding of "REP MOVS" to MMIO emulated inside the hypervisor (xsa112)

An insufficient bound checking flaw was found in the Xen hypervisor's implementation of acceleration support for the "REP MOVS" instructions. A privileged HVM guest user could potentially use this flaw to crash the host...

DEBIAN-CVE-2014-8867

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...

CVE-2014-8867

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...

CVE-2014-8867

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...

Design/Logic Flaw

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...

UBUNTU-CVE-2014-8867

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...

CVE-2014-8867

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...

CVE-2014-8867

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O MMIO emulated in the hypervisor, which allows local HVM guests to cause a denial of service host crash via unspecified vectors...