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CVE-2025-58145— Arm issues with page refcounting

Quick assessment

Affected
Xen Xen
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Xen是Xen开源的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen存在安全漏洞，该漏洞源于断言错误，可能导致空指针取消引用。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.35% · P27

Possible ATT&CK Techniques 2 AI

T1055 · Process Injection T1206
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I. Basic Information for CVE-2025-58145

Vulnerability Information
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Vulnerability Title
Arm issues with page refcounting
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Xen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是Xen开源的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen存在安全漏洞，该漏洞源于断言错误，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Xen Xen consult Xen advisory XSA-473 -

II. Public POCs for CVE-2025-58145

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III. Intelligence Information for CVE-2025-58145

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Same Patch Batch · Xen · 2025-09-11 · 5 CVEs total

CVE-2025-58142 Mutiple vulnerabilities in the Viridian interface
CVE-2025-58144 Arm issues with page refcounting
CVE-2025-58143 Mutiple vulnerabilities in the Viridian interface
CVE-2025-27466 Mutiple vulnerabilities in the Viridian interface

IV. Related Vulnerabilities

Same product: Xen
Same vendor: Xen

V. Comments for CVE-2025-58145

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