1370 matches found
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...
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...
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...
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-2017-15593
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...
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...
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...
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...
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...
cxenstored: Race in domain cleanup
ISSUE DESCRIPTION When shutting down a VM with a stubdomain, a race in cxenstored may cause a double-free. IMPACT The xenstored daemon may crash, resulting in a DoS of any parts of the system relying on it including domain creation / destruction, ballooning, device changes, etc. VULNERABLE SYSTEM...
Missing check for grant table
ISSUE DESCRIPTION The function gnttabcacheflush handles GNTTABOPcacheflush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for...