CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:P/I:P/A:C
EPSS
Percentile
28.1%
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and
Citrix XenServer 6.0.2 and earlier uses the return value of the
get_free_pirq function as an array index without checking that the return
value indicates an error, which allows guest OS users to cause a denial of
service (invalid memory write and host crash) and possibly gain privileges
via unspecified vectors.
Author | Note |
---|---|
mdeslaur | This is XSA-13 only affects 4.1 |