Bug 2570703 (CVE-2026-62929)

Summary: CVE-2026-62929 migtd: migtd: Privilege escalation via expired pointer dereference in virtio-vsock
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the virtio-vsock implementation of the Intel Trust Domain Extensions (TDX) Migration Trust Domain (MigTD). An expired pointer dereference can be triggered by a local, highly privileged user operating at the hypervisor level. Successful exploitation may allow the attacker to achieve privilege escalation and unauthorized information disclosure.
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Description OSIDB Bzimport 2026-11-10 20:16:38 UTC 
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.