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VuXML IDDescription
523bb0b7-ba4d-11e6-ae1b-002590263bf5xen-kernel -- x86 task switch to VM86 mode mis-handled

The Xen Project reports:

LDTR, just like TR, is purely a protected mode facility. Hence even when switching to a VM86 mode task, LDTR loading needs to follow protected mode semantics. This was violated by the code.

On SVM (AMD hardware): a malicious unprivileged guest process can escalate its privilege to that of the guest operating system.

On both SVM and VMX (Intel hardware): a malicious unprivileged guest process can crash the guest.


Discovery 2016-11-22
Entry 2016-12-04
xen-kernel
< 4.7.1

CVE-2016-9382
ports/214936
https://xenbits.xen.org/xsa/advisory-192.html