#VU117653 Permissions, Privileges, and Access Controls in Xen - CVE-2025-58149
Published: October 24, 2025
Vulnerability identifier: #VU117653
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-58149
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a malicious guest to access sensitive information.
The vulnerability exists due to PCI detach logic in libxl that does not remove access permissions to any 64bit memory BARs the device might have. A malicious guest can access any 64bit memory BAR when such device is no longer assigned to the domain.
Remediation
Install updates from vendor's website.