CVE-2015-5291

Heap-based buffer overflow in PolarSSL 1.x before 1.2.17 and ARM mbed TLS formerly PolarSSL 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service client crash and possibly execute arbitrary code via a long hostname to the server name indication SNI...

CVE-2015-8036

Heap-based buffer overflow in ARM mbed TLS formerly PolarSSL 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service client crash and possibly execute arbitrary code via a long session ticket name to the session ticket extension, which is not properly handl...

DEBIAN-CVE-2015-7814

Race condition in the relinquishmemory function in arch/arm/domain.c in Xen 4.6.x and earlier allows local domains with partial management control to cause a denial of service host crash via vectors involving the destruction of a domain and using XENMEMdecreasereservation to reduce the memory of...

DEBIAN-CVE-2015-7813

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of 1 HYPERVISORphysdevop hypercalls, which are not properly handled in the dophysdevop function in...

UBUNTU-CVE-2015-7813

Xen 4.4.x, 4.5.x, and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls, which allows local guests to cause a denial of service via a sequence of 1 HYPERVISORphysdevop hypercalls, which are not properly handled in the dophysdevop function in...

UBUNTU-CVE-2015-7814

Race condition in the relinquishmemory function in arch/arm/domain.c in Xen 4.6.x and earlier allows local domains with partial management control to cause a denial of service host crash via vectors involving the destruction of a domain and using XENMEMdecreasereservation to reduce the memory of...

CVE-2015-7814

Race condition in the relinquishmemory function in arch/arm/domain.c in Xen 4.6.x and earlier allows local domains with partial management control to cause a denial of service host crash via vectors involving the destruction of a domain and using XENMEMdecreasereservation to reduce the memory of...

CVE-2014-3717

Xen 4.4.x does not properly validate the load address for 64-bit ARM guest kernels, which allows local users to read system memory or cause a denial of service crash via a crafted kernel, which triggers a buffer overflow...

CVE-2014-3714

The ARM image loading functionality in Xen 4.4.x does not properly validate kernel length, which allows local users to read system memory or cause a denial of service crash via a crafted 32-bit ARM guest kernel in an image, which triggers a buffer overflow...

CVE-2013-5634

arch/arm/kvm/arm.c in the Linux kernel before 3.10 on the ARM platform, when KVM is used, allows host OS users to cause a denial of service NULL pointer dereference, OOPS, and host OS crash or possibly have unspecified other impact by omitting vCPU initialization before a KVMGETREGLIST ioctl call...

CVE-2014-4022

The allocdomainstruct function in arch/arm/domain.c in Xen 4.4.x, when running on an ARM platform, does not properly initialize the structure containing the grant table pages for a domain, which allows local guest administrators to obtain sensitive information via the GNTTABOPsetuptable...

CVE-2014-3969

Xen 4.4.x, when running on an ARM system, does not properly check write permissions on virtual addresses, which allows local guest administrators to gain privileges via unspecified vectors...

CVE-2013-6282

The 1 getuser and 2 putuser API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addresses, which allows attackers to read or modify the contents of arbitrary kernel memory locations via a crafted application, as exploited in the wild against...

CVE-2014-2986

The vgicdistrmmiowrite function in the virtual guest interrupt controller GIC distributor arch/arm/vgic.c in Xen 4.4.x, when running on an ARM system, allows local guest users to cause a denial of service NULL pointer dereference and host crash via unspecified vectors...

CVE-2014-5148

Xen 4.4.x, when running on an ARM system and "handling an unknown system register access from 64-bit userspace," returns to an instruction of the trap handler for kernel space faults instead of an instruction that is associated with faults in 64-bit userspace, which allows local guest users to...

CVE-2014-5147

Xen 4.4.x, when running a 64-bit kernel on an ARM system, does not properly handle traps from the guest domain that use a different address width, which allows local guest users to cause a denial of service host crash via a crafted 32-bit process...

CVE-2011-1759

Integer overflow in the sysoabisemtimedop function in arch/arm/kernel/sysoabi-compat.c in the Linux kernel before 2.6.39 on the ARM platform, when CONFIGOABICOMPAT is enabled, allows local users to gain privileges or cause a denial of service heap memory corruption by providing a crafted argument...

x86: Long latency populate-on-demand operation is not preemptible

ISSUE DESCRIPTION When running an HVM domain in Populate-on-Demand mode, Xen would sometimes search the domain for memory to reclaim, in response to demands for population of other pages in the same domain. This search runs without preemption. The guest can, by suitable arrangement of its memory...

arm: various unimplemented hypercalls log without rate limiting

ISSUE DESCRIPTION The HYPERVISORphysdevop hypercall and most suboperations of the HYPERVISORhvmop hypercall are not currently implemented by Xen on ARM and when called will log the use to the hypervisor console. However these guest accessible log messages are not rate-limited. IMPACT A malicious...

arm: Host crash when preempting a multicall

ISSUE DESCRIPTION Early versions of Xen on ARM did not support "multicall" functionality the ability to perform multiple operations via a single hypercall and therefore stubbed out the functionality needed to support preemption of multicalls in a manner which crashed the host. When multicall...