Untraceable Memory Access Vulnerability in PCI Devices
CVE-2024-31145

7.5HIGH

Key Information:

Vendor

Xen Project
Status
Xen Project
Vendor
CVE Published:
25 September 2024

What is CVE-2024-31145?

Certain PCI devices may be incorrectly allocated Reserved Memory Regions, created for Intel VT-d or Unity Mapping ranges for AMD-Vi. These regions are essential for critical platform operations like USB emulation. Due to an error in the handling of memory mappings, once activated, these mappings may erroneously persist, allowing inappropriate access by guests to memory areas that should be restricted. This oversight could lead to unauthorized data exposure and potential security risks for affected systems.

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Affected Version(s)

Xen consult Xen advisory XSA-460

References

https://xenbits.xenproject.org/xsa/advisory-460.html

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Teddy Astie of Vates and diagnosed as a security issue by Jan Beulich of SUSE.
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