Description
[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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | — |
References
- https://xenbits.xenproject.org/xsa/advisory-475.htmlPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/10/21/1Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-475.htmlPatch, Vendor Advisory
Timeline
- Published
- Oct 31, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Analyzed