CVE-2024-31145

HIGH EPSS 14.1%
Published Sep 25, 20241y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Sep 25, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR") for Intel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used for platform tasks such as legacy USB emulation. Since the precise purpose of these regions is unknown, once a device associated with such a region is active, the mappings of these regions need to remain continuouly accessible by the device. In the logic establishing these mappings, error handling was flawed, resulting in such mappings to potentially remain in place when they should have been removed again. Respective guests would then gain access to memory regions which they aren't supposed to have access to.

CVSS Details

Base Score
7.5
Exploitability
0.8
Impact
6.0
Vector string
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required High
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
14.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
xenxen*≥4.0.0

References 3

  • openwall.com http://www.openwall.com/lists/oss-security/2024/08/14/2
    Mailing ListThird Party Advisory
  • xenbits.xen.org http://xenbits.xen.org/xsa/advisory-460.html
    PatchVendor Advisory
  • xenbits.xenproject.org https://xenbits.xenproject.org/xsa/advisory-460.html
    PatchVendor Advisory

Remediation