CVE-2022-33748 Race condition in xen

What is CVE-2022-33748?

CVE-2022-33748 is a medium-severity vulnerability in Debian Debian Linux, published on 11 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

lock order inversion in transitive grant copy handling As part of XSA-226 a missing cleanup call was inserted on an error handling path. While doing so, locking requirements were not paid attention to. As a result two cooperating guests granting each other transitive grants can cause locks to be acquired nested within one another, but in respectively opposite order. With suitable timing between the involved grant copy operations this may result in the locking up of a CPU.

Weakness: CWE-755

Which versions are affected by CVE-2022-33748?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Xen Xen.

How do I fix CVE-2022-33748?

Apply the vendor's patch.

Is CVE-2022-33748 being exploited?

There is no known exploitation of CVE-2022-33748 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

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

Also known as ALPINE-CVE-2022-33748, DEBIAN-CVE-2022-33748, GHSA-fqrh-w8r3-22q6, UBUNTU-CVE-2022-33748.