| Package | Affected versions | Patched versions |
|---|---|---|
| xenserver | = 6.0.2= 6.2.0= 6.5= 7.0 |
Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.
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