7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
6.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
26.7%
A parameter verification issue was discovered in Xen through 4.9.x. The function alloc_heap_pages
allows callers to specify the first NUMA node that should be used for allocations through the memflags
parameter; the node is extracted using the MEMF_get_node
macro. While the function checks to see if the special constant NUMA_NO_NODE
is specified, it otherwise does not handle the case where node >= MAX_NUMNODES
. This allows an out-of-bounds access to an internal array.
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
6.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
26.7%