CVE-2025-27466
Mutiple vulnerabilities in the Viridian interface
- State
- Published
- Severity
- 9.8 Critical
- Published
- Sep 11, 2025
- Updated
- Nov 4, 2025
- Reserved
- Feb 26, 2025
Description
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]
There are multiple issues related to the handling and accessing of guest memory pages in the viridian code:
1. A NULL pointer dereference in the updating of the reference TSC area. This is CVE-2025-27466.
2. A NULL pointer dereference by assuming the SIM page is mapped when a synthetic timer message has to be delivered. This is CVE-2025-58142.
3. A race in the mapping of the reference TSC page, where a guest can get Xen to free a page while still present in the guest physical to machine (p2m) page tables. This is CVE-2025-58143.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-395 Use of NullPointerException Catch to Detect NULL Pointer Dereference
Affected Products
| Product | Versions |
|---|---|
XenXen |
|
References
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