Bug 2571160 (CVE-2026-57892)

Summary: CVE-2026-57892 migtd: migtd: Privilege escalation via improper access control in policy evaluation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Intel Trust Domain Extensions (TDX) Migration Trust Domain (MigTD) policy evaluation engine. Insufficient granularity in access control checks allows an unauthenticated attacker on an adjacent network to bypass intended security policies. A successful exploit can lead to privilege escalation within the hypervisor environment, compromising the confidentiality and integrity of protected virtual machines.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-10 20:43:23 UTC 
Insufficient granularity of access control in the MigTD v2 policy evaluation engine for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow an escalation of privilege. Network adversary with an unauthenticated user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via adjacent 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 (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.