CVE-2025-58149 - CVE House
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Status published Unknown CVE-2025-58149

Incorrect removal of permissions on PCI device unplug

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • This issue was discovered by Jiqian Chen of AMD and diagnosed as a security issue by Roger Pau Monné of XenServer.

References

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Affected Vendor

Affected Software

Xen
Vulnerable Versions:
consult Xen advisory XSA-476

Timeline

Official Publish: October 31st, 2025
Last Modified: November 4th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.