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[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]
Some Viridian hypercalls can specify a mask of vCPU IDs as an input, in one of three formats. Xen has boundary checking bugs with all three formats, which can cause out-of-bounds reads and writes while processing the inputs.
* CVE-2025-58147. Hypercalls using the HV_VP_SET Sparse format can cause vpmask_set() to write out of bounds when converting the bitmap to Xen's format.
* CVE-2025-58148. Hypercalls using any input format can cause send_ipi() to read d->vcpu[] out-of-bounds, and operate on a wild vCPU pointer.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Nov 3, 2025 | Oct 31, 2025 |
| Debian | — | Upgrade xen | Dec 4, 2025 | Dec 4, 2025 |
| Dell Powerstore Dsa2026115 | — | Upgrade Dell PowerStoreOS to the latest version | Feb 25, 2026 | Feb 24, 2026 |
| Suse | — | Upgrade xen-toolsUpgrade xen-libsUpgrade xen-libs-32bitUpgrade xen-tools-xendomains-wait-diskUpgrade xen-doc-htmlUpgrade xen-tools-domUUpgrade xenUpgrade xen-devel | Dec 5, 2025 | Oct 24, 2025 |
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