CVE-2016-1571: Undefined Security Weakness

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...