Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-58149— Incorrect removal of permissions on PCI device unplug

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，该漏洞源于分离逻辑未移除64位内存BAR访问权限，可能导致域在设备不再分配后仍保留访问权限。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.43% · P36
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-58149

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Incorrect removal of permissions on PCI device unplug
Source: CVE Program / CVE List V5
Vulnerability Description
When passing through PCI devices, the detach logic in libxl won't remove access permissions to any 64bit memory BARs the device might have. As a result a domain can still have access any 64bit memory BAR when such device is no longer assigned to the domain. For PV domains the permission leak allows the domain itself to map the memory in the page-tables. For HVM it would require a compromised device model or stubdomain to map the leaked memory into the HVM domain p2m.
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，该漏洞源于分离逻辑未移除64位内存BAR访问权限，可能导致域在设备不再分配后仍保留访问权限。
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-476 -

II. Public POCs for CVE-2025-58149

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-58149

请登录查看更多情报信息。

Same Patch Batch · Xen · 2025-10-31 · 3 CVEs total

CVE-2025-58148 x86: Incorrect input sanitisation in Viridian hypercalls
CVE-2025-58147 x86: Incorrect input sanitisation in Viridian hypercalls

IV. Related Vulnerabilities

Same product: Xen
Same vendor: Xen

V. Comments for CVE-2025-58149

No comments yet

Leave a comment