What’s Vulnerable › Vulnerabilities

CVE-2023-46840: VT-d: Failure to quarantine devices in !HVM builds

• Severity: medium (CVSS 4.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-20 · updated 2026-06-17
• Weakness: CWE-670

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.

Affected products

• Fedoraproject Fedora: 39
• xen: from 4.17

References

• https://xenbits.xenproject.org/xsa/advisory-450.html
• http://xenbits.xen.org/xsa/advisory-450.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XLL6SQ6IKFYXLYWITYZCRV5IBRK5G35R/
• https://xenbits.xenproject.org/xsa/advisory-450.html

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