CVE-2025-27466

[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.

The following products are affected by CVE-2025-27466 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-27466.

URL	Resource
http://www.openwall.com/lists/oss-security/2025/09/09/1
http://xenbits.xen.org/xsa/advisory-472.html
https://xenbits.xenproject.org/xsa/advisory-472.html