CVE-2025-58145 Arm issues with page refcounting
A race condition in Xen allows attackers to violate domain boundaries, potentially leading to privilege escalation or unauthorized data access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-58145?
CVE-2025-58145 is a high-severity vulnerability in Xen Xen, published on 11 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]
There are two issues related to the mapping of pages belonging to other domains: For one, an assertion is wrong there, where the case actually needs handling. A NULL pointer de-reference could result on a release build. This is CVE-2025-58144.
And then the P2M lock isn't held until a page reference was actually obtained (or the attempt to do so has failed). Otherwise the page can not only change type, but even ownership in between, thus allowing domain boundaries to be violated. This is CVE-2025-58145.
Weakness: CWE-362
Which versions are affected by CVE-2025-58145?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2025-58145?
Apply the vendor's patch.
Is CVE-2025-58145 being exploited?
There is no known exploitation of CVE-2025-58145 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2025-58145, DEBIAN-CVE-2025-58145, GHSA-j9v5-p5pj-rmp7, UBUNTU-CVE-2025-58145.