CVE-2023-46840— VT-d: Failure to quarantine devices in !HVM builds
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I. Basic Information for CVE-2023-46840
Vulnerability Information
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Vulnerability Title
VT-d: Failure to quarantine devices in !HVM builds
Source: NVD (National Vulnerability Database)
Vulnerability Description
Incorrect placement of a preprocessor directive in source code results in logic that doesn't operate as intended when support for HVM guests is compiled out of Xen.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Xen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是英国剑桥（Cambridge）大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen 4.17及之前版本存在安全漏洞，该漏洞源于源代码中的预处理器指令不正确，当设备从域中删除时，没有被正确隔离，且保留对之前所在域的访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-46840
| # | POC Description | Source Link | Shenlong Link |
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Same Patch Batch · Xen · 2024-03-20 · 3 CVEs total
| CVE-2023-46839 | pci: phantom functions assigned to incorrect contexts | |
| CVE-2023-46841 | x86: shadow stack vs exceptions from emulation stubs |
IV. Related Vulnerabilities
V. Comments for CVE-2023-46840
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