Bug 2570217 (CVE-2026-61383)

Summary: CVE-2026-61383 migtd: migtd: Denial of Service via incorrect buffer size calculation in servtd_get_quote
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
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). An incorrect calculation of buffer size within the servtd_get_quote function allows a local attacker to cause a Denial of Service (DoS). By exploiting this flaw, an attacker can disrupt hypervisor migration services, compromising system availability.
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Description OSIDB Bzimport 2026-11-10 19:43:50 UTC 
Incorrect calculation of buffer size in the MigTD's servtd_get_quote for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with an unauthenticated user combined with a high complexity attack may enable denial of service. 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 (none), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.