CVE-2015-8554

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

CVE-2015-8554

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

CVE-2015-8554: Improper Restriction of Operations within the Bounds of a Memory Buffer

Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional aka qemu-dm device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries,...

broken AMD FPU FIP/FDP/FOP leak workaround

ISSUE DESCRIPTION There is a workaround in Xen to deal with the fact that AMD CPUs don't load the x86 registers FIP and possibly FCS, FDP and possibly FDS, and FOP from memory via XRSTOR or FXRSTOR when there is no pending unmasked exception. See XSA-52. However, this workaround does not cover al...

FreeBSD : xen-kernel -- VMX: guest user mode may crash guest with non-canonical RIP (81f9d6a4-ddaf-11e5-b2bd-002590263bf5)

The Xen Project reports : VMX refuses attempts to enter a guest with an instruction pointer which doesn't satisfy certain requirements. In particular, the instruction pointer needs to be canonical when entering a guest currently in 64-bit mode. This is the case even if the VM entry information...

CVE-2016-2271

VMX in Xen 4.6.x and earlier, when using an Intel or Cyrix CPU, allows local HVM guest users to cause a denial of service guest crash via vectors related to a non-canonical RIP...

CVE-2016-2271

VMX in Xen 4.6.x and earlier, when using an Intel or Cyrix CPU, allows local HVM guest users to cause a denial of service guest crash via vectors related to a non-canonical RIP...

CVE-2016-2271

VMX in Xen 4.6.x and earlier, when using an Intel or Cyrix CPU, allows local HVM guest users to cause a denial of service guest crash via vectors related to a non-canonical RIP...

CVE-2016-2271

CVE-2016-2271 affects Xen VMX on Xen 4.6.x and earlier when running on an Intel or Cyrix CPU. Local HVM guests can trigger a denial of service (guest crash) via vectors related to a non-canonical RIP. Impact is limited to the guest (not the host) per the description; no public patch/version is sp...

VMX: guest user mode may crash guest with non-canonical RIP

ISSUE DESCRIPTION VMX refuses attempts to enter a guest with an instruction pointer which doesn't satisfy certain requirements. In particular, the instruction pointer needs to be canonical when entering a guest currently in 64-bit mode. This is the case even if the VM entry information specifies ...

xen-kernel -- VMX: guest user mode may crash guest with non-canonical RIP

The Xen Project reports: VMX refuses attempts to enter a guest with an instruction pointer which doesn't satisfy certain requirements. In particular, the instruction pointer needs to be canonical when entering a guest currently in 64-bit mode. This is the case even if the VM entry information...

CVE-2016-1571

The paginginvlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service host crash via a non-canonical guest address in an INVVPID instruction, which triggers a...

CVE-2016-1571

CVE-2016-1571 affects Xen 3.3.x–4.6.x. When shadow paging or nested virtualization is enabled, a local HVM guest can trigger the hypervisor bug check via a non-canonical guest address in an INVVPID instruction, causing a host crash (DoS). The description does not specify a vendor patch or fixed v...

CVE-2016-1571

The paginginvlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service host crash via a non-canonical guest address in an INVVPID instruction, which triggers a...

VMX: intercept issue with INVLPG on non-canonical address

ISSUE DESCRIPTION While INVLPG does not cause a General Protection Fault when used on a non-canonical address, INVVPID in its "individual address" variant, which is used to back the intercepted INVLPG in certain cases, fails in such cases. Failure of INVVPID results in a hypervisor bug check...

Xen Denial of Service Vulnerability (CNVD-2016-00238)

Xen is a virtualization technology developed by the University of Cambridge that can be used in the Linux kernel, allowing multiple operating systems to run simultaneously. A denial of service vulnerability exists in Xen 4.6 that allows local attackers to cause a denial of service via a heavily...

CVE-2015-8615

The hvmsetcallbackvia function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method HVMPARAMCALLBACKIRQ...

Design/Logic Flaw

The hvmsetcallbackvia function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method HVMPARAMCALLBACKIRQ...

CVE-2015-8615

The hvmsetcallbackvia function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method HVMPARAMCALLBACKIRQ...

CVE-2015-8615: Undefined Security Weakness

The hvmsetcallbackvia function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method HVMPARAMCALLBACKIRQ...