CVE-2025-58142

Summary

[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.

Affected Software

Weaknesses

Workarounds

Not enabling the reference_tsc and stimer viridian extensions will avoid the issues.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: total

CVE Program Container

Additional References

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

References

• https://xenbits.xenproject.org/xsa/advisory-472.html

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