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

What is CVE-2023-46840?

CVE-2023-46840 is a medium-severity vulnerability in Fedoraproject Fedora, published on 20 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-670

Which versions are affected by CVE-2023-46840?

It affects 2 products.

Products include Fedoraproject Fedora, Xen Xen.

How do I fix CVE-2023-46840?

Apply the vendor's patch.

Is CVE-2023-46840 being exploited?

There is no known exploitation of CVE-2023-46840 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2023-46840, GHSA-858p-q38q-g87r, UBUNTU-CVE-2023-46840.