Xen 4.2.x and 4.1.x does not properly restrict access to IRQs, which
allows local stub domain clients to gain access to IRQs and cause a
denial of service via vectors related to "passed-through IRQs or PCI
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20130418 Xen Security Advisory 46 (CVE-2013-1919) - Several access permission issues with IRQs for unprivileged guests
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