Intel TDX Migration Trust Domain virtio-vsock null pointer dereference

Summaryinfo

A vulnerability was found in Intel TDX Migration Trust Domain. It has been rated as very critical. The impacted element is an unknown function of the component virtio-vsock. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2026-62929. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Intel TDX Migration Trust Domain (version unknown). It has been rated as very critical. This issue affects an unknown function of the component virtio-vsock. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. The product dereferences a pointer that it expects to be valid but is NULL. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Expired pointer dereference in the MigTD's virtio-vsock implementation for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow an escalation of privilege and information disclosure. System software adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

It is possible to read the advisory at intel.com. The identification of this vulnerability is CVE-2026-62929 since 07/15/2026. The exploitation is known to be easy. Attacking locally is a requirement. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Intel

Name

• TDX Migration Trust Domain

License

• commercial

Website

• Vendor: https://www.intel.com/

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