CVE-2025-58149
HIGH EPSS 31.8%
Published Oct 31, 20258mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
Published Oct 31, 2025 8mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
31.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-672
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| xen | xen | * | ≥4.0.0 |
References 3
- openwall.com http://www.openwall.com/lists/oss-security/2025/10/24/1
- xenbits.xen.org http://xenbits.xen.org/xsa/advisory-476.html
- xenbits.xenproject.org https://xenbits.xenproject.org/xsa/advisory-476.html
Remediation
- openwall.com http://www.openwall.com/lists/oss-security/2025/10/24/1
- xenbits.xen.org http://xenbits.xen.org/xsa/advisory-476.html
- xenbits.xenproject.org https://xenbits.xenproject.org/xsa/advisory-476.html