🛡️ CVE-2025-58149
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-672 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-672
Public Exploit ✅ No
Source NVD
Published 2025-10-31
Updated 2026-06-02
Modified 2026-01-14

Affected Packages

Software From version Fixed in
xen 4.0.0 —

References

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