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VuXML IDDescription
53dbd096-ba4d-11e6-ae1b-002590263bf5xen-kernel -- x86 segment base write emulation lacking canonical address checks

The Xen Project reports:

Both writes to the FS and GS register base MSRs as well as the WRFSBASE and WRGSBASE instructions require their input values to be canonical, or a #GP fault will be raised. When the use of those instructions by the hypervisor was enabled, the previous guard against #GP faults (having recovery code attached) was accidentally removed.

A malicious guest administrator can crash the host, leading to a DoS.


Discovery 2016-11-22
Entry 2016-12-04
xen-kernel
ge 4.4 lt 4.7.1

CVE-2016-9385
ports/214936
https://xenbits.xen.org/xsa/advisory-193.html