Bug 2570427 (CVE-2026-63027)

Summary: CVE-2026-63027 migtd: migtd: Denial of service via incorrect behavior order in get_tcb_level_by_svn
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 Intel Trust Domain Extensions Migration Trust Domain (MigTD). An incorrect sequence of operations in the get_tcb_level_by_svn function allows an unauthenticated attacker on an adjacent network to trigger unexpected behavior within the hypervisor environment. A successful attack can lead to a Denial of Service (DoS), disrupting virtualization and migration services.
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Description OSIDB Bzimport 2026-11-10 19:57:36 UTC 
Incorrect behavior order in the get_tcb_level_by_svn for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. Network adversary with an unauthenticated user combined with a low complexity attack may enable denial of service. 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 (none), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.