EUVD-2020-18280

Malware in sbrugna...

xen-kernel -- x86 PV guests may be able to mask interrupts

The Xen Project reports: Certain PV guest kernel operations page table writes in particular need emulation, and use Xen's general x86 instruction emulator. This allows a malicious guest kernel which asynchronously modifies its instruction stream to effect the clearing of EFLAGS.IF from the state...