Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- http://www.securityfocus.com/bid/100818
- http://xenbits.xen.org/xsa/advisory-231.html
- https://support.citrix.com/article/CTX227185
- https://www.debian.org/security/2017/dsa-4050
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
- http://www.securitytracker.com/id/1039348
ADP enrichment
No English description supplied.