VULNERABILITY INTELLIGENCE

CVE-2025-58149

CVSS score7.5 HIGH
EPSS probability0.43%
CISA KEVNot currently listed
Published2025-10-31
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-672

Primary references