ALPINE-CVE-2020-25598

An issue was discovered in Xen 4.14.x. There is a missing unlock in the XENMEMacquireresource error path. The RCU Read, Copy, Update mechanism is a synchronisation primitive. A buggy error path in the XENMEMacquireresource exits without releasing an RCU reference, which is conceptually similar to...

Xen Denial of Service and Elevation of Privilege Vulnerabilities

Xen is an open source virtual machine monitor developed by the Xen Project. A Denial of Service and Elevation of Privilege vulnerability exists in Xen 4.11, which stems from a failure to properly handle x86 IOREQ server resource accounting for use with external emulators and can be exploited by a...

ALPINE-CVE-2018-10981

An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service host OS infinite loop in situations where a QEMU device model attempts to make invalid transitions between states of a request...

PT-2017-3083

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.10 Description The issue is related to inadequate access control in the Xen hypervisor, which can be exploited by an attacker with local access to an x86 guest operating system account in Hardware Virtual Machine HVM...

DEBIAN-CVE-2015-0361

Use-after-free vulnerability in Xen 4.2.x, 4.3.x, and 4.4.x allows remote domains to cause a denial of service system crash via a crafted hypercall during HVM guest teardown...

DEBIAN-CVE-2014-8594

The dommuupdate function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service NULL pointer dereference by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging...

Xen Bug Could cause Crashes, Expose Cloud Data

The Xen Project published a security advisory yesterday about a critical vulnerability in its virtual machine and hypervisor systems that could expose public cloud servers to attacks capable of crashing host machines and even stealing small amounts of random data. The fix was made available under...

DEBIAN-CVE-2012-6333

Multiple HVM control operations in Xen 3.4 through 4.2 allow local HVM guest OS administrators to cause a denial of service physical CPU consumption via a large input...

Memory mapping failure DoS vulnerability

ISSUE DESCRIPTION When setp2mentry fails, Xen's internal data structures the p2m and m2p tables can get out of sync. This failure can be triggered by unusual guest behaviour exhausting the memory reserved for the p2m table. If it happens, subsequent guest-invoked memory operations can cause Xen t...