Xen contains a flaw that may allow a local denial of service. The issue is triggered when the set_debugreg hypercall allows writing to reserved bits of the DR7 debug control register. This will result in loss of availability for the program.
Local Access Required
Loss of Availability
It has been reported that this issue has been fixed. Upgrade to version 4.1.4, 4.2.0, or higher, to address this vulnerability.
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