CVE-2016-9383

CVE-2016-9383 affects Xen when running on a 64‑bit hypervisor. The issue stems from broken emulation of bit test instructions, allowing a local x86 guest to modify arbitrary host memory and potentially obtain sensitive data, crash the host, or execute code on the host. Connected sources describe ...

CVE-2016-7777

Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it...

CVE-2014-9066

Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service write denial or NMI watchdog timeout and host crash via a large number of read requests, a different vulnerability than...