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.
Metrics
Affected Vendors & Products
Solution
No solution given by the vendor.
Workaround
Not enabling the reference_tsc and stimer viridian extensions will avoid the issues.
Link | Providers |
---|---|
https://xenbits.xenproject.org/xsa/advisory-472.html |
![]() ![]() |
Thu, 11 Sep 2025 15:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Weaknesses | CWE-366 | |
Metrics |
cvssV3_1
|
Thu, 11 Sep 2025 14:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
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. | |
Title | Mutiple vulnerabilities in the Viridian interface | |
References |
|

Status: PUBLISHED
Assigner: XEN
Published:
Updated: 2025-09-11T14:41:56.160Z
Reserved: 2025-08-26T06:48:41.443Z
Link: CVE-2025-58143

Updated: 2025-09-11T14:23:28.802Z

Status : Awaiting Analysis
Published: 2025-09-11T14:15:42.470
Modified: 2025-09-11T17:14:10.147
Link: CVE-2025-58143

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