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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Oct 26, 2017 | Sep 12, 2017 |
| Debian | — | Upgrade xen | Nov 29, 2017 | Sep 12, 2017 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Sep 12, 2017 |
| Suse | — | Upgrade xenUpgrade xen-doc-htmlUpgrade xen-tools-domUUpgrade xen-kmp-paeUpgrade xen-develUpgrade xen-doc-pdfUpgrade xen-toolsUpgrade xen-kmp-defaultUpgrade xen-libs-32bitUpgrade xen-libs | Sep 13, 2017 | Sep 12, 2017 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Sep 12, 2017 |
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