Denial of service

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests...

ALPINE-CVE-2017-15588

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to execute arbitrary code on the host OS because of a race condition that can cause a stale TLB entry...

ALPINE-CVE-2017-15595

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service unbounded recursion, stack consumption, and hypervisor crash or possibly gain privileges via crafted page-table stacking...

UBUNTU-CVE-2017-15596

An issue was discovered in Xen 4.4.x through 4.9.x allowing ARM guest OS users to cause a denial of service prevent physical CPU usage because of lock mishandling upon detection of an add-to-physmap error...

DEBIAN-CVE-2017-15596

An issue was discovered in Xen 4.4.x through 4.9.x allowing ARM guest OS users to cause a denial of service prevent physical CPU usage because of lock mishandling upon detection of an add-to-physmap error...

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...

DEBIAN-CVE-2017-15588

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to execute arbitrary code on the host OS because of a race condition that can cause a stale TLB entry...

UBUNTU-CVE-2017-15590

An issue was discovered in Xen through 4.9.x allowing x86 guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because MSI mapping was mishandled...

CVE-2017-15592

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests...

CVE-2017-15592

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests...

page type reference leak on x86

ISSUE DESCRIPTION The page type system of Xen requires cleanup when the last reference for a given page is being dropped. In order to exclude simultaneous updates to a given page by multiple parties, pages which are updated are locked beforehand. This locking includes temporarily increasing the...

x86: Incorrect handling of self-linear shadow mappings with translated guests

ISSUE DESCRIPTION The shadow pagetable code uses linear mappings to inspect and modify the shadow pagetables. A linear mapping which points back to itself is known as self-linear. For translated guests, the shadow linear mappings being in a separate address space are not intended to be self-linea...

multiple MSI mapping issues on x86

ISSUE DESCRIPTION Multiple issues exist with the setup of PCI MSI interrupts: - unprivileged guests were permitted access to devices not owned by them, in particular allowing them to disable MSI or MSI-X on any device - HVM guests can trigger a codepath intended only for PV guests - some failure...

Unlimited recursion in linear pagetable de-typing

ISSUE DESCRIPTION x86 PV guests are permitted to set up certain forms of what is often called "linear page tables", where pagetables contain references to other pagetables at the same level or higher. Certain restrictions apply in order to fit into Xen's page type handling system. An important...

hypervisor stack leak in x86 I/O intercept code

ISSUE DESCRIPTION Intercepted I/O operations may deal with less than a full machine word's worth of data. While read paths had been the subject of earlier XSAs and hence have been fixed, at least one write path was found where the data stored into an internal structure could contain bits from an...

Debian DLA-1128-1 : qemu-kvm security update

Multiple vulnerabilities were discovered in qemu-kvm, a full virtualization solution for Linux hosts on x86 hardware with x86 guests based on the Quick EmulatorQemu. CVE-2017-14167 Incorrect validation of multiboot headers could result in the execution of arbitrary code. CVE-2017-15038 When using...

[SECURITY] [DLA 1128-1] qemu-kvm security update

Package : qemu-kvm Version : 1.1.2+dfsg-6+deb7u24 CVE ID : CVE-2017-14167 CVE-2017-15038 Multiple vulnerabilities were discovered in qemu-kvm, a full virtualization solution for Linux hosts on x86 hardware with x86 guests based on the Quick EmulatorQemu. CVE-2017-14167 Incorrect validation of...

Security update for xen (important)

This update for xen fixes several issues. These security issues were fixed: - CVE-2017-14316: Missing bound check in function allocheappages for an internal array allowed attackers using crafted hypercalls to execute arbitrary code within Xen XSA-231, bsc1056278 - CVE-2017-14318: The function...

SUSE-SU-2017:2420-1 Security update for xen

This update for xen fixes several issues. These security issues were fixed: - CVE-2017-14316: Missing bound check in function allocheappages for an internal array allowed attackers using crafted hypercalls to execute arbitrary code within Xen XSA-231, bsc1056278 - CVE-2017-14318: The function...

Missing NUMA node parameter verification

ISSUE DESCRIPTION The function allocheappages allows callers to specify the first NUMA node that should be used for allocations through the memflags parameter; the node is extracted using the MEMFgetnode macro. While the function checks to see if the special constant NUMANONODE is specified, it...