4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
26.7%
The acceleration support for the “REP MOVS” instruction in Xen 4.4.x,
3.2.x, and earlier lacks properly bounds checking for memory mapped I/O
(MMIO) emulated in the hypervisor, which allows local HVM guests to cause a
denial of service (host crash) via unspecified vectors.