XSA-317

Advisory: XSA-317

This vulnerability affects:

• HVM and 32-bit PV guests allowed to use more than 1024 event channels.
• 64-bit guests allowed to use more than 4096 event channels.

The testcase will try to allocate more than 4096 event channels. On vulnerable platform, Xen will fall over a NULL evtchn bucket pointer.

See also

tests/xsa-317/main.c