CVE-2017-14316
Publication date 12 September 2017
Last updated 24 July 2024
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| xen | ||
| 16.04 LTS xenial |
Fixed 4.6.5-0ubuntu1.4
|
|
| 14.04 LTS trusty |
Fixed 4.4.2-0ubuntu0.14.04.14
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.8 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |